add option: --with-targetname=px30

2026-09-28 16:17:09 +08:00 · 2021-06-18 12:24:51 +08:00
184 changed files with 13919 additions and 7529 deletions
@@ -10,7 +10,6 @@ Makefile
 Makefile.in
 .deps/
 .libs/
-m4/*.m4
 /acinclude.m4
 /aclocal.m4
 /autom4te.cache
@@ -22,7 +21,6 @@ m4/*.m4
 /depcomp
 /install-sh
 /libtool
-/ltmain.sh
 /*.pc
 /*config.h
 /*config.h.in
@@ -31,4 +29,3 @@ m4/*.m4
 /src/font/utils/ucd/
 /src/sysres/font_list
 /src/sysres/license/dat_files/
-/configure~
@@ -1,5 +1,3 @@
-ACLOCAL_AMFLAGS = -I m4
-
 SUBDIRS = src 3rd-party include rtos etc m4 cmake build

 EXTRA_DIST = minigui.pc.in \
@@ -1,21 +1,5 @@
 # Release Notes

- [Version 5.0.16](#version-5016)
-   + [What's new in version 5.0.16](#whats-new-in-version-5016)
- [Version 5.0.15](#version-5015)
-   + [What's new in version 5.0.15](#whats-new-in-version-5015)
- [Version 5.0.13](#version-5013)
-   + [What's new in version 5.0.13](#whats-new-in-version-5013)
- [Version 5.0.12](#version-5012)
-   + [What's new in version 5.0.12](#whats-new-in-version-5012)
- [Version 5.0.11](#version-5011)
-   + [What's new in version 5.0.11](#whats-new-in-version-5011)
- [Version 5.0.10](#version-5010)
-   + [What's new in version 5.0.10](#whats-new-in-version-5010)
- [Version 5.0.9](#version-508)
-   + [What's new in version 5.0.9](#whats-new-in-version-508)
- [Version 5.0.8](#version-508)
-   + [What's new in version 5.0.8](#whats-new-in-version-508)
 - [Version 5.0.6](#version-506)
   + [What's new in version 5.0.6](#whats-new-in-version-506)
 - [Version 5.0.5](#version-505)
@@ -36,153 +20,6 @@
   + [Changes leading to incompatibility](#changes-leading-to-incompatibility)
   + [Deprecated APIs](#deprecated-apis)

-## Version 5.0.16
-
-On May 27, 2025, FMSoft announces the availability of MiniGUI 5.0.16,
-which is a bugfix release with some minor enhancements of MiniGUI 5.0.x.
-
-* BUGFIXING:
-   - The desktop thread can not handle the request from other threads as soon as possible.
-   - The `MSG_TIMEOUT` message can not be fired correctly under MiniGUI-Threads mode.
-   - Bad subpixel rendering when background color is RGBA0000.
-* TUNING:
-   - Tune `configure.ac` and `Makefile.am` to use the system libtool scripts.
-   - Do not check `pciaccess` if the target architecture is not `i386`.
-
-## Version 5.0.15
-
-On May 09, 2025, FMSoft announces the availability of MiniGUI 5.0.15,
-which is an enhancement release with some minor enhancements
-of MiniGUI 5.0.x.
-
-* ENHANCEMENTS:
-   - Optimize NEWGAL engines: `shadow`, `drm`, and `fbcon` for large resolution.
-   - New APIs: `GetWindowSharedSurfaceFD()` and `CreateMemDCFromSharedSurfaceFD()` for compositing schema.
-* CHANGES:
-   - The operations for DRM userland driver changed.
-
-## Version 5.0.13
-
-On Aug. 31, 2023, FMSoft announces the availability of MiniGUI 5.0.13,
-which is an enhancement release with some minor enhancements
-of MiniGUI 5.0.x.
-
-### What's new in version 5.0.13
-
-In this version, we made some enhancements:
-
-* ENHANCEMENTS:
-   - Disable BIDI for text in UTF-8 charset by default.
-* CHANGES:
-   - Add `BIDI_FLAG_NONE` and `BIDI_FLAG_LEGACY`.
-* BUGFIXING:
-   - Ignore C0CTRL characters when renerding text.
-   - Support for vowels.
-
-## Version 5.0.12
-
-On May 10, 2023, FMSoft announces the availability of MiniGUI 5.0.12,
-which is an enhancement release with some minor enhancements
-of MiniGUI 5.0.x.
-
-### What's new in version 5.0.12
-
-In this version, we made some enhancements:
-
-* ENHANCEMENTS:
-  - Add new API `GetACharsExtentPointEx()`.
-  - Add new APIs `GetTabbedACharsExtent()`, `GetTabbedACharsExtentPoint()`,
-    and `GetTabbedACharsExtentPointEx()`.
-  - Enhance two APIs `GetTextExtentPoint()` and `GetTabbedTextExtentPoint()`
-    to support BIDI charsets.
-  - Tune management of tick count.
-* BUGFIXING:
-   - Fix a typo: `Achar2UChar()` to `AChar2UChar()`.
-
-## Version 5.0.11
-
-On Dec. 31, 2022, FMSoft announces the availability of MiniGUI 5.0.11,
-which is a bug fixing release with bug fixes and some minor enhancements
-of MiniGUI 5.0.x.
-
-### What's new in version 5.0.11
-
-In this version, we made some enhancements
-
-* ENHANCEMENTS:
-* BUGFIXING:
-   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/94
-   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/96
-   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/105
-   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/106
-* OPTIMIZATIONS:
-   - Optimize the refresh of scrolled.
-* TUNING:
-   - Call `mg_FreeMsgQueueForThisThread` immediately in `TerminateGUI()`.
-   - Use `CreateLogFontEx` instead of `CreateLogFont` to follow the new style convention of font name when creating the system logfonts,
-     but the orientation is ignored for the system logfont.
-
-## Version 5.0.10
-
-On Sep. 30, 2022, FMSoft announces the availability of MiniGUI 5.0.10,
-which is a bug fixing release with bug fixes and some minor enhancements
-of MiniGUI 5.0.x.
-
-### What's new in version 5.0.10
-
-In this version, we made some enhancements
-
-* ENHANCEMENTS:
-   - Enhance `fbcon` engine to support double buffering for Threads and Standalone mode. (Runtime option: `fbcon.double_buffering`).
-   - Cleanup and enhance `shadow` engine to use `SyncUpdate` method.
-   - Relaying `MSG_IDLE` messages to the active descendant controls in every 0.5s.
-* BUGFIXING:
-   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/83
-   - Fix a bug reported in https://github.com/VincentWei/minigui/issues/87
-   - Fix bugs reported in https://github.com/VincentWei/minigui/issues/89
-   - Fix some bugs when virtual window enabled under Standalone and Processes runtime modes.
-* OPTIMIZATIONS:
-* TUNING:
-   - Fix some warnings reported by GCC 12.
-   - Use inline functions for SetCursor and SetDefaultCursor instead of macros.
-
-## Version 5.0.9
-
-On Jan. 14, 2022, FMSoft announces the availability of MiniGUI 5.0.9,
-which is a bug fixing release with minor enhancements of MiniGUI 5.0.x.
-
-### What's new in version 5.0.9
-
-In this version, we fixed some bugs:
-
-* BUGFIXING:
-   - Fix a crash bug in `InitSubDC()` of `src/newgdi/gdi.c`.
-* ENHANCEMENTS:
-* OPTIMIZATIONS:
-* TUNING:
-   - Change copyright year to 2022.
-
-## Version 5.0.8
-
-The MiniGUI development team announces the availability of MiniGUI 5.0.8,
-which is a bug fixing release with minor enhancements of MiniGUI 5.0.x.
-
-### What's new in version 5.0.8
-
-In this version, we fixed some bugs and made some optimizations and enhancements:
-
-* BUGFIXING:
-* ENHANCEMENTS:
-   - Support for WebP image format based on `libwebp`.
-   - Support for two ARM64-based hardware platforms: PX30 and R818.
-   - New surface pixel format for main window: `ST_PIXEL_XRGB565` under compositing schema.
-* OPTIMIZATIONS:
-   - Shrink heap size for fixed string.
-   - Optimize the memory use of blitting context.
-* TUNING:
-   - Tune code of fbcon video engine for compositing schema.
-   - Fix warnings and errors for conditional compilation.
-
 ## Version 5.0.6

 The MiniGUI development team announces the availability of MiniGUI 5.0.6,
@@ -1,6 +1,6 @@
-Version 5.0.16 (2025/05/27)
+Version 5.0.7 (2021/06/30)

-This is a minor enhancement and bugfix release of MiniGUI 5.0.x, the stable version.
+This is a bugfix release of MiniGUI 5.0.x, the stable version.

 Other packages for MiniGUI resource, tools, components, and samples:

@@ -1,7 +1,6 @@
 #!/bin/sh

-libtoolize
-cat m4/*.m4 > aclocal.m4
+cat m4/*.m4 > acinclude.m4
 aclocal
 autoheader
 automake --add-missing --foreign --copy
@@ -55,36 +55,6 @@ wallpaper_pattern_size=full
 # def_compositor_so=
 #}}

-#{{ifdef _MGGAL_SHADOW
-[shadow]
-real_engine=pc_xvfb
-defaultmode=800x600-16bpp
-
-# `cw`: rotating screen clock-wise.
-# `ccw`: rotating screen counter clock-wise.
-# `hflip`: flipping screen horizontally.
-# `vflip`: flipping screen vertically.
-rotate_screen=ccw
-
-# Whether the async. update is enabled.
-# Use `true` or `yes` for enabled, anything else for disabled.
-# Since 5.0.13.
-async_update=yes
-
-# The synchronization interval for the asyn. updater (milli-seconds).
-# This setting is only valid when `async_update` is enabled and
-# the real engine does not provide WaitWBlank method.
-# Since 5.0.13.
-update_interval=15
-
-# The minimal pixels to use the hardware accelerator.
-# If the number of pixels to copy is less than this value,
-# MiniGUI will use the software copy routine to update the real screen,
-# even if the real device provides a hardware accelerator.
-# Since 5.0.13.
-min_pixels_using_hwaccl=4096
-#}}
-
 #{{ifdef _MGGAL_DRM
 [drm]
 defaultmode=1024x768-32bpp
@@ -108,21 +78,9 @@ dpi=96
 # Since 5.0.0.
 double_buffering=true

-# The update interval for the asyn. updater (milli-seconds).
-# This setting is only valid when drmWaitVBlank doesn't work correctly.
-# Since 5.0.13.
-update_interval=15
-
-# The minimal pixels to use the hardware accelerator.
-# If the number of pixels to copy is less than this value,
-# MiniGUI will use the software copy routine to update the real screen,
-# even if the device provides a hardware accelerator.
-# Since 5.0.13.
-min_pixels_using_hwaccl=4096
-
 # The filename of the shared library for the external driver.
 # The equivalent environment variable: MG_GAL_DRM_DRIVER
-exdriver=libdrmdrivers.so
+exdriver=libhidrmdrivers-0.2.so.0
 #}}

 #{{ifdef _MGIAL_SINGLETOUCHKEY
@@ -147,22 +105,6 @@ seat=seat0
 [fbcon]
 defaultmode=1024x768-16bpp
 dpi=96
-
-# Whether double buffering is enabled (only for threads and standalone runmodes).
-# Use `true` or `yes` for enabled, anything else for disabled.
-# Note that under compositing schema, double buffering is always enabled.
-# Since 5.0.10.
-double_buffering=true
-
-# Whether the async. update is enabled.
-# Use `true` or `yes` for enabled, anything else for disabled.
-# Since 5.0.13.
-async_update=yes
-
-# The update interval for the asyn. updater (milli-seconds).
-# This setting is only valid when drmWaitVBlank doesn't work correctly.
-# Since 5.0.13.
-update_interval=15
 #}}

 #{{ifdef _MGGAL_PCXVFB
@@ -175,6 +117,13 @@ exec_file=/usr/local/bin/gvfb
 [rtos_xvfb]
 defaultmode=800x600-16bpp

+#{{ifdef _MGGAL_SHADOW
+[shadow]
+real_engine=pc_xvfb
+defaultmode=800x600-16bpp
+rotate_screen=normal
+#}}
+
 #{{ifdef _MGGAL_MLSHADOW
 [mlshadow]
 real_engine=qvfb
@@ -268,8 +268,6 @@ MGUI_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
 #define MG_UNLIKELY(expr) (expr)
 #endif

-#define HAVE(FEATURE) (defined HAVE_##FEATURE && HAVE_##FEATURE)
-
    /**
     * \defgroup endian_info Endianness information
     * @{
@@ -313,7 +311,6 @@ MGUI_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
        defined(__amd64) || \
        (defined(__alpha__) || defined(__alpha)) || \
        defined(__arm__) || defined(__aarch64__) || \
-        defined(__loongarch__) || \
        defined(__riscv) || \
        (defined(__CC_ARM) && !defined(__BIG_ENDIAN)) || \
        (defined(__mips__) && defined(__MIPSEL__)) || \
@@ -2349,7 +2346,6 @@ int init_minigui_printf (int (*output_char) (int ch),
 #define _ERR_PRINTF(fmt, ...)                   \
    do {                                        \
        TCS_RED (stderr);                       \
-        fprintf (stderr, "%s: ", __FUNCTION__); \
        fprintf (stderr, fmt, ##__VA_ARGS__);   \
        TCS_NONE (stderr);                      \
    } while (0)
@@ -131,31 +131,7 @@
 #define IAL_EVENT_GESTURE_PINCH_UPDATE   0x0084
 #define IAL_EVENT_GESTURE_PINCH_END      0x0085

-#define TABLET_TOOL_CHANGED_X           (1 << 0)
-#define TABLET_TOOL_CHANGED_Y           (1 << 1)
-#define TABLET_TOOL_CHANGED_PRESSURE    (1 << 2)
-#define TABLET_TOOL_CHANGED_DISTANCE    (1 << 3)
-#define TABLET_TOOL_CHANGED_TILT_X      (1 << 4)
-#define TABLET_TOOL_CHANGED_TILT_Y      (1 << 5)
-#define TABLET_TOOL_CHANGED_ROTATION    (1 << 6)
-#define TABLET_TOOL_CHANGED_SLIDER      (1 << 7)
-#define TABLET_TOOL_CHANGED_SIZE_MAJOR  (1 << 8)
-#define TABLET_TOOL_CHANGED_SIZE_MINOR  (1 << 9)
-#define TABLET_TOOL_CHANGED_WHEEL       (1 << 10)
-
 #ifndef TABLET_TOOL_X
-    #define TABLET_TOOL_X                   0
-    #define TABLET_TOOL_Y                   1
-    #define TABLET_TOOL_PRESSURE            2
-    #define TABLET_TOOL_DISTANCE            3
-    #define TABLET_TOOL_TILT_X              4
-    #define TABLET_TOOL_TILT_Y              5
-    #define TABLET_TOOL_ROTATION            6
-    #define TABLET_TOOL_SLIDER              7
-    #define TABLET_TOOL_SIZE_MAJOR          8
-    #define TABLET_TOOL_SIZE_MINOR          9
-    #define TABLET_TOOL_WHEEL               10
-
    #define TABLET_TOOL_PROXIMITY_STATE_INVALID 0
    #define TABLET_TOOL_PROXIMITY_STATE_OUT     1
    #define TABLET_TOOL_PROXIMITY_STATE_IN      2
@@ -173,6 +149,31 @@

    #define TABLET_PAD_STRIP_SOURCE_UNKNOWN 0
    #define TABLET_PAD_STRIP_SOURCE_FINGER  1
+
+    #define TABLET_TOOL_CHANGED_X           (1 << 0)
+    #define TABLET_TOOL_CHANGED_Y           (1 << 1)
+    #define TABLET_TOOL_CHANGED_PRESSURE    (1 << 2)
+    #define TABLET_TOOL_CHANGED_DISTANCE    (1 << 3)
+    #define TABLET_TOOL_CHANGED_TILT_X      (1 << 4)
+    #define TABLET_TOOL_CHANGED_TILT_Y      (1 << 5)
+    #define TABLET_TOOL_CHANGED_ROTATION    (1 << 6)
+    #define TABLET_TOOL_CHANGED_SLIDER      (1 << 7)
+    #define TABLET_TOOL_CHANGED_SIZE_MAJOR  (1 << 8)
+    #define TABLET_TOOL_CHANGED_SIZE_MINOR  (1 << 9)
+    #define TABLET_TOOL_CHANGED_WHEEL       (1 << 10)
+
+    #define TABLET_TOOL_X                   0
+    #define TABLET_TOOL_Y                   1
+    #define TABLET_TOOL_PRESSURE            2
+    #define TABLET_TOOL_DISTANCE            3
+    #define TABLET_TOOL_TILT_X              4
+    #define TABLET_TOOL_TILT_Y              5
+    #define TABLET_TOOL_ROTATION            6
+    #define TABLET_TOOL_SLIDER              7
+    #define TABLET_TOOL_SIZE_MAJOR          8
+    #define TABLET_TOOL_SIZE_MINOR          9
+    #define TABLET_TOOL_WHEEL               10
+
 #endif

 #define IAL_EVENT_TABLET_TOOL_AXIS       0x0090
@@ -456,45 +456,6 @@ MG_EXPORT void GUIAPI MiniGUIPanic (int exitcode);
     * @{
     */

-/**
- * \fn GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
-                const char* client_name,
-                int max_nr_highers, int max_nr_normals, int *cli_id)
- * \brief Joins to a layer and returns the client identifier if success.
- *
- * This function should be called by clients before calling any other MiniGUI
- * functions. You can call \a GetLayerInfo to get the layer information.
- * If the layer to be joined does not exist, the server, i.e. \a mginit, will
- * try to create a new one. If you passed a NULL pointer or a null string for
- * \a layer_name, the client will join to the default layer.
- *
- * If the client want to create a new layer, you should specify the maximal
- * number of z-nodes in the higher level (max_nr_highers) and the maximal
- * number of z-nodes in the normal level (max_nr_normals) of the new layer.
- * Passing zero to \a max_nr_highers and max_nr_normals will use the default
- * values, and the default values are specified by ServerStartup.
- *
- * Note that the server will create a default layer named "mginit".
- *
- * \param layer_name The name of the layer. You can use NAME_TOPMOST_LAYER to
- *        specify the current topmost layer.
- * \param client_name The name of the client.
- * \param max_nr_highers The maximal number of z-nodes in the higher level of
- *        the new layer.
- * \param max_nr_normals The maximal number of z-nodes in the normal level of
- *        the new layer.
- * \param cli_id The pointer to a buffer of int to return the client identifier.
- *
- * \return The handle to the layer on success, INV_LAYER_HANDLE on error.
- *
- * \note Only call this function in clients of MiniGUI-Processes.
- *
- * \sa GetLayerInfo, ServerStartup, ServerCreateLayer
- */
-MG_EXPORT GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
-                const char* client_name,
-                int max_nr_highers, int max_nr_normals, int *cli_id);
-
 /**
 * \fn GHANDLE GUIAPI JoinLayer (const char* layer_name,
                const char* client_name,
@@ -529,30 +490,9 @@ MG_EXPORT GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
 *
 * \sa GetLayerInfo, ServerStartup, ServerCreateLayer
 */
-static inline GHANDLE GUIAPI JoinLayer (const char* layer_name,
+MG_EXPORT GHANDLE GUIAPI JoinLayer (const char* layer_name,
                const char* client_name,
-                int max_nr_highers, int max_nr_normals)
-{
-    return JoinLayerEx (layer_name, client_name,
-                max_nr_highers, max_nr_normals, NULL);
-}
-
-/**
- * \fn int GUIAPI GetClientId (void)
- * \brief Gets the client identifier.
- *
- * You can get the information of a layer through this function.
- * The information will be returned through the pointer arguments
- * if the specific pointer is not NULL.
- *
- * \return Returns the client identifier of the current process.
- *      Note that the server always returns 0.
- *
- * \sa JoinLayerEx
- *
- * Since 5.2.0
- */
-MG_EXPORT int GUIAPI GetClientId (void);
+                int max_nr_highers, int max_nr_normals);

 /**
 * \fn GHANDLE GUIAPI GetLayerInfo (const char* layer_name,
@@ -2185,7 +2125,7 @@ MG_EXPORT int GUIAPI ServerSendReplyEx (int clifd,
 * \fn int GUIAPI ServerSendReply (int clifd, const void* reply, int len)
 * \brief Sends the reply to the client.
 *
- * This function sends a reply pointed to by \a reply which is
+ * This function sends a replay pointed to by \a reply which is
 * \a len bytes long to the client.
 *
 * \note Only used by the server to send the reply to the client.
@@ -2733,26 +2673,6 @@ MG_EXPORT void GUIAPI DesktopUpdateAllWindow (void);

 #define DUMMY_LAYER_HANDLE  (GHANDLE)(-1)

-/**
- * \fn GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
-                const char* client_name,
-                int max_nr_highers, int max_nr_normals, int *cli_fd)
- * \brief The dummy replacement of the same function for MiniGUI-Processes.
- *
- * This function is a replacment of the same function for MiniGUI-Processes
- * runtime mode. We provide this function for MiniGUI-Threads and
- * MiniGUI-Standalone runtime modes, in order to avoid using the
- * conditional compilation instructions in your source code.
- *
- * \return Always returns DUMMY_LAYER_HANDLE to indicate success.
- */
-static inline GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
-        const char* client_name,
-        int max_nr_highers, int max_nr_normals, int *cli_fd)
-{
-    return DUMMY_LAYER_HANDLE;
-}
-
 /**
 * \fn GHANDLE GUIAPI JoinLayer (const char* layer_name,
                const char* client_name,
@@ -2767,8 +2687,7 @@ static inline GHANDLE GUIAPI JoinLayerEx (const char* layer_name,
 * \return Always returns DUMMY_LAYER_HANDLE to indicate success.
 */
 static inline GHANDLE GUIAPI JoinLayer (const char* layer_name,
-        const char* client_name,
-        int max_nr_highers, int max_nr_normals)
+        const char* client_name, int max_nr_highers, int max_nr_normals)
 {
    return DUMMY_LAYER_HANDLE;
 }
@@ -4178,7 +4097,7 @@ static inline int GUIAPI ShowCursor (BOOL fShow) {
 #endif /* !_MGHAVE_CURSOR */

 /**
- * \fn HCURSOR SetCursor(HCURSOR hcsr)
+ * \def SetCursor(hcsr)
 * \brief Changes the current cursor.
 *
 * This function changes the current cursor to be \a hcsr.
@@ -4191,12 +4110,10 @@ static inline int GUIAPI ShowCursor (BOOL fShow) {
 *
 * \sa SetCursorEx, SetDefaultCursor
 */
-static inline HCURSOR SetCursor(HCURSOR hcsr) {
-    return SetCursorEx (hcsr, FALSE);
-}
+#define SetCursor(hcsr) SetCursorEx (hcsr, FALSE)

 /**
- * \fn HCURSOR SetDefaultCursor(HCURSOR hcsr)
+ * \def SetDefaultCursor(hcsr)
 * \brief Changes the current cursor, and set it as the default cursor.
 *
 * This function changes the current cursor to be \a hcsr, and set it as
@@ -4210,9 +4127,7 @@ static inline HCURSOR SetCursor(HCURSOR hcsr) {
 *
 * \sa SetCursorEx, SetCursor
 */
-static inline HCURSOR SetDefaultCursor(HCURSOR hcsr) {
-    return SetCursorEx (hcsr, TRUE);
-}
+#define SetDefaultCursor(hcsr) SetCursorEx (hcsr, TRUE)

    /** @} end of cursor_fns */

@@ -2905,9 +2905,6 @@ typedef struct _WINMASKINFO {
 *
 * This message is sent to the all main windows when the system
 * enters idle loop.
- *
- * Since 5.0.10, this messasge will be relayed to the active child control
- * if the main window is currently active.
 */
 #define MSG_IDLE            0x0142

@@ -2990,22 +2987,18 @@ typedef struct _WINMASKINFO {
   if the client moved to a new layer */
 #define MSG_LAYERCHANGED    0x0149

-/* Since 5.2.0; the server send this message to the client
-   if a window has been composited to the screen.  */
-#define MSG_WINCOMPOSITED   0x014A
-
 #endif /* defined _MGRM_PROCESSES */

 /* Since 5.0.0: for managing message thread */
-#define MSG_MANAGE_MSGTHREAD    0x014B
+#define MSG_MANAGE_MSGTHREAD    0x014A
    #define MSGTHREAD_SIGNIN        0x00
    #define MSGTHREAD_SIGNOUT       0x01

 /* Since 5.0.0: for calculating the default position */
-#define MSG_CALC_POSITION       0x014C
+#define MSG_CALC_POSITION       0x014B

 /* Since 5.0.6: for waking up the client */
-#define MSG_WAKEUP_CLIENT       0x014D
+#define MSG_WAKEUP_CLIENT       0x014C

 /**
 * \def MSG_DOESNEEDIME
@@ -7241,31 +7234,6 @@ MG_EXPORT BOOL GUIAPI SetMainWindowGestureFlags (HWND hWnd, DWORD dwFlags);

 #ifdef _MGSCHEMA_COMPOSITING

-/**
- * \fn int GUIAPI GetWindowSharedSurfaceFD (HWND hwnd, size_t *map_size,
- *      DWORD *flags)
- * \brief Gets the file descriptor of the surface buffer for a window or
- * the main window it locates.
- *
- * This function gets the file descriptor of the surface buffer for
- * the specified window if it is a main window or the main window it locates.
- * Note that if the window is a control that has the style `WS_EX_CTRLASMAINWIN`,
- * the window will have a separate surface buffer.
- *
- * \param hwnd The handle to the window.
- *
- * \return An integer larger than or equal to 0 for a valid file descriptor,
- *      otherwise a negative value.
- *
- * \note This function only available when _MGSCHEMA_COMPOSITING is defined.
- *
- * \sa CreateMemDCFromSharedSurfaceFD
- *
- * Since 5.0.13
- */
-MG_EXPORT int GUIAPI GetWindowSharedSurfaceFD (HWND hWnd, size_t *map_size,
-        DWORD *flags);
-
 /**
 * \fn BOOL GUIAPI SetMainWindowCompositing (HWND hWnd,
        int type, DWORD arg)
@@ -1,4 +1,4 @@
 # This file does not do anything, except making sure these files are included
 # when you run 'make dist'.

-EXTRA_DIST = 
+EXTRA_DIST = libtool.m4
@@ -2,12 +2,11 @@ prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
 includedir=@includedir@
-runmode=@MINIGUI_RUNMODE@
-libsuffix=@MGLIB_SUFFIX@

 Name: MiniGUI
 Description: A mature cross-platform windowing and GUI system for embedded systems and IoT smart devices.
 Version: @MINIGUI_VERSION@
+Runmode: @MINIGUI_RUNMODE@
 Requires:
 Libs: -L${libdir} -lminigui_@MGLIB_SUFFIX@ @DEP_LIBS@
 Libs.private:
@@ -1,10 +1,10 @@
-COMMON_SUBDIRS = libc misc main kernel sysres ial control ex_ctrl font gui mybmp include textedit newgal newgdi
+COMMON_SUBDIRS = libc misc main kernel sysres ial control ex_ctrl font gui mybmp include textedit

 COMMON_LADD =                   \
    libc/liblibc.la             \
    misc/libmisc.la             \
    control/libcontrol.la       \
-    ex_ctrl/libexctrl.la        \
+    ex_ctrl/libexctrl.la           \
    font/libfont.la             \
    font/in-core/libincore.la   \
    ial/libial.la               \
@@ -13,15 +13,31 @@ COMMON_LADD =                   \
    mybmp/libmybmp.la           \
    kernel/libkernel.la         \
    sysres/libsysres.la         \
-    textedit/libtextedit.la     \
-    newgal/libnewgal.la         \
-    newgdi/libnewgdi.la
+    textedit/libtextedit.la

-DIST_SUBDIRS = $(COMMON_SUBDIRS) newgal newgdi server client standalone
-SUBDIRS = $(COMMON_SUBDIRS) @RUNMODE_SUBDIRS@
+if MGRM_STANDALONE
+LITE_LADD = standalone/libstandalone.la
+LITE_SUBDIRS = standalone
+else
+if MGRM_PROCESSES
+LITE_LADD = server/libserver.la client/libclient.la
+LITE_SUBDIRS = server client
+else
+LITE_LADD = 
+LITE_SUBDIRS = 
+endif
+endif
+
+NEWGAL_LADD = newgal/libnewgal.la newgdi/libnewgdi.la
+NEWGAL_SUBDIRS = newgal newgdi
+
+DIST_SUBDIRS = $(COMMON_SUBDIRS) newgal newgdi server client standalone 
+SUBDIRS = $(COMMON_SUBDIRS) $(NEWGAL_SUBDIRS) $(LITE_SUBDIRS) 

 MGSOURCES = template.c template.h
-MGLIBADD =  $(COMMON_LADD) @RUNMODE_LADD@
+MGLIBADD =  $(COMMON_LADD)      \
+            $(LITE_LADD)        \
+            $(NEWGAL_LADD)
 MGLDFLAGS = -release $(LT_RELEASE) -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)

 lib_LTLIBRARIES=libminigui_@MGLIB_SUFFIX@.la
@@ -184,23 +184,6 @@ static void process_socket_message (MSG *msg)
                LOSWORD(msg->wParam), HISWORD(msg->wParam),
                LOSWORD(msg->lParam), HISWORD(msg->lParam));
    }
-#ifdef _MGSCHEMA_COMPOSITING
-    else if (msg->message == MSG_WINCOMPOSITED) {
-        /* Since 5.2.0 */
-        int slot = (int)msg->wParam;
-        HWND hwnd = (HWND)msg->lParam;
-        unsigned dirty_age = (unsigned)msg->time;
-        if (__mg_client_check_znode_hwnd(slot, hwnd, __mg_client_id)) {
-            GAL_Surface *ssurf = ((PMAINWIN)hwnd)->surf;
-            assert(ssurf->shared_header);
-            __mg_lock_file_for_write(ssurf->fd);
-            if (ssurf->dirty_info->dirty_age == dirty_age) {
-                ssurf->dirty_info->nr_dirty_rcs = 0;
-            }
-            __mg_unlock_file_for_write(ssurf->fd);
-        }
-    }
-#endif
    else {
        if (msg->hwnd == HWND_NULL) {
            msg->hwnd = HWND_DESKTOP;
@@ -535,8 +518,8 @@ BOOL client_IdleHandler4Client (PMSGQUEUE msg_queue, BOOL wait)
    return (n > 0);
 }

-GHANDLE GUIAPI JoinLayerEx (const char* layer_name, const char* client_name,
-               int max_nr_topmosts, int max_nr_normals, int *cli_id)
+GHANDLE GUIAPI JoinLayer (const char* layer_name, const char* client_name,
+               int max_nr_topmosts, int max_nr_normals)
 {
    GHANDLE layer_handle = INV_LAYER_HANDLE;
    REQUEST req;
@@ -546,12 +529,8 @@ GHANDLE GUIAPI JoinLayerEx (const char* layer_name, const char* client_name,
    if (mgIsServer)
        return layer_handle;

-    if (__mg_client_id != 0) {
-        /* Already joined, return the handle */
-        if (cli_id)
-            *cli_id = __mg_client_id;
+    if (__mg_client_id != 0) /* Already joined, return the handle */
        return GetLayerInfo (NAME_SELF_LAYER, NULL, NULL, NULL);
-    }

    if (layer_name) {
        strncpy (info.layer_name, layer_name, LEN_LAYER_NAME);
@@ -614,18 +593,10 @@ GHANDLE GUIAPI JoinLayerEx (const char* layer_name, const char* client_name,

    __mg_start_client_desktop ();

-    if (cli_id)
-        *cli_id = __mg_client_id;
-
 ret:
    return layer_handle;
 }

-int GUIAPI GetClientId (void)
-{
-    return __mg_client_id;
-}
-
 GHANDLE GUIAPI GetLayerInfo (const char* layer_name,
                int* nr_clients, BOOL* is_topmost, int* cli_active)
 {
@@ -299,15 +299,7 @@ static void change_status_from_pose (PCONTROL pctrl, int new_pose,
        }
    }

-    /* DK: When the radio or check button state changes do not erase the background,
-     * and the prospects for direct rendering */
-    btnGetRects (pctrl, &rcClient, &rcContent, &rcBitmap);
-    if (BUTTON_IS_PUSHBTN(pctrl) || (pctrl->dwStyle & BS_PUSHLIKE))
-        InvalidateRect((HWND)pctrl, NULL, TRUE);
-    else
-        InvalidateRect((HWND)pctrl, &rcBitmap, FALSE);
-
-    /* complete a click if the click if valid
+    /*complete a click if the click if valid
     * (mouse lbutton up in button )*/
    if (old_pose == BST_PUSHED && new_pose != BST_DISABLE
            && change_valid)
@@ -320,6 +312,14 @@ static void change_status_from_pose (PCONTROL pctrl, int new_pose,

        NotifyParent ((HWND)pctrl, pctrl->id, BN_CLICKED);
    }
+
+    /* DK: When the radio or check button state changes do not erase the background,
+     * and the prospects for direct rendering */
+    btnGetRects (pctrl, &rcClient, &rcContent, &rcBitmap);
+    if (BUTTON_IS_PUSHBTN(pctrl) || (pctrl->dwStyle & BS_PUSHLIKE))
+        InvalidateRect((HWND)pctrl, NULL, TRUE);
+    else
+        InvalidateRect((HWND)pctrl, &rcBitmap, FALSE);
 }

 /*btnGetRects:
@@ -423,8 +423,8 @@ static void draw_bitmap_button (PCONTROL pctrl, HDC hdc, DWORD dwStyle,

        GetClientRect ((HWND)pctrl, &prcClient);
        if (dwStyle & BS_REALSIZEIMAGE) {
-            x += (int)(w - bmp->bmWidth) >> 1;
-            y += (int)(h - bmp->bmHeight) >> 1;
+            x += (w - bmp->bmWidth) >> 1;
+            y += (h - bmp->bmHeight) >> 1;
            w = h = 0;

            if (bmp->bmWidth > RECTW(prcClient)){
@@ -847,6 +847,8 @@ static LRESULT ButtonCtrlProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPara
            break;
        }

+
+
        case BM_SETSTYLE:
            pctrl->dwStyle &= 0xFFFF0000;
            pctrl->dwStyle |= (DWORD)(wParam & 0x0000FFFF);
@@ -1052,7 +1054,7 @@ static LRESULT ButtonCtrlProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPara
        }

        default:
-            break;
+        break;
    }

    return DefaultControlProc (hWnd, uMsg, wParam, lParam);
@@ -1678,7 +1678,7 @@ esright_input_char_refresh (HWND hWnd,
        scroll_rc.right = cur_caret_x;

        ScrollWindow(hWnd, -scroll_len, 0, &scroll_rc, NULL);
-        UpdateInvalidClient(hWnd, TRUE);
+        UpdateWindow(hWnd, FALSE);
        edtSetCaretPos (hWnd, sled);

        sled->changed = TRUE;
@@ -2143,6 +2143,9 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
        else {
            chars = 1;

+            if (charBuffer [0] == 127) // BS
+                charBuffer [0] = '\b';
+
            if (dwStyle & ES_UPPERCASE) {
                charBuffer [0] = toupper (charBuffer[0]);
            }
@@ -2151,8 +2154,12 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
            }
        }

-        if (chars == 1 && (charBuffer[0] == '\b' || charBuffer[0] == 0x7F)) {
-            // ASCII BS or DEL
+        if (chars == 1) {
+            if (charBuffer [0] < 0x20 && charBuffer[0] != '\b') //FIXME
+                return 0;
+        }
+
+        if (charBuffer[0] == '\b') { //backspace
            int del;

            if (sled->editPos == 0 && sled->selStart == sled->selEnd)
@@ -2177,11 +2184,7 @@ SLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
                sleInsertText (hWnd, sled, NULL, del);
            }
        }
-        else if (chars == 1 && charBuffer [0] < 0x20) {
-            // ignore all other ASCII control characters.
-            return 0;
-        }
-        else {
+        else{
            if (dwStyle & ES_LEFT) {
                esleft_input_char_refresh(hWnd, sled, (char*)charBuffer, chars);
                set_edit_caret_pos(hWnd, sled);
@@ -404,7 +404,7 @@ void mglist_set_itemops (MgList *mglst, PMGITEMOPS iop)
    mglst->iop = *iop;
 }

-LRESULT DefaultItemViewProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam,
+int DefaultItemViewProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam,
                         PSCRDATA pscrdata, MgList *mglst)
 {
    switch (message) {
@@ -140,7 +140,7 @@ struct _MgList

 /* ------------------------- external api -------------------------- */

-MG_EXPORT LRESULT DefaultItemViewProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam,
+MG_EXPORT int DefaultItemViewProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam,
                         PSCRDATA pscrdata, MgList *mglst);

 MG_EXPORT SVITEM_DRAWFUNC mglist_set_itemdraw (MgList *mglst, SVITEM_DRAWFUNC draw_func);
@@ -172,10 +172,6 @@ BOOL scrolled_set_cont_pos (HWND hWnd, PSCRDATA pscrdata, int cont_x, int cont_y
        SetScrollPos (hWnd, SB_VERT, cont_y);
        bChange = TRUE;
    }
-
-    if (bChange)
-        UpdateInvalidClient(hWnd, FALSE);
-
    return bChange;
 }

@@ -589,7 +585,7 @@ int scrolled_init (HWND hWnd, PSCRDATA pscrdata, int w, int h)
    return 0;
 }

-LRESULT DefaultScrolledProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
+int DefaultScrolledProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
 {
    PSCRDATA pscrdata = NULL;

@@ -96,7 +96,7 @@ typedef struct _scrdata
 typedef SCRDATA *PSCRDATA;


-MG_EXPORT LRESULT DefaultScrolledProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam);
+MG_EXPORT int     DefaultScrolledProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam);
 MG_EXPORT int     scrolled_init (HWND hWnd, PSCRDATA pscrdata, int w, int h);
 MG_EXPORT void    scrolled_destroy (PSCRDATA pscrdata);
 MG_EXPORT void    scrolled_hscroll (HWND hWnd, PSCRDATA pscrdata, WPARAM wParam, LPARAM lParam);
@@ -15,7 +15,7 @@
 *   and Graphics User Interface (GUI) support system for embedded systems
 *   and smart IoT devices.
 *
- *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
 *   Copyright (C) 1998~2002, WEI Yongming
 *
 *   This program is free software: you can redistribute it and/or modify
@@ -493,15 +493,10 @@ LRESULT ScrollViewCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lPara
        break;
    }

-    case MSG_DESTROY: {
-        /* suppress a warning about calling free() before using the pointer */
-        PSVDATA svdata = (PSVDATA) GetWindowAdditionalData2 (hWnd);
-        if (svdata) {
-            scrollview_destroy(svdata);
-            free (svdata);
-        }
+    case MSG_DESTROY:
+        scrollview_destroy (psvdata);
+        free (psvdata);
        break;
-    }

    case MSG_GETDLGCODE:
        return DLGC_WANTARROWS;
@@ -2096,6 +2096,7 @@ static void teOnChar (HWND hWnd, PTEDATA ptedata, WPARAM wParam)
            rcInv.right = ptedata->svdata.scrdata.nContWidth;
            rcInv.bottom = rcInv.top + ptedata->nLineHeight - ptedata->nLineBaseH;
            REFRESH_NODE_EX(node, &rcInv);
+           // UpdateWindow(hWnd, FALSE);

            newlinenr = NODE_LINENR(node);
            rcInv.left = 0;
@@ -2103,10 +2104,12 @@ static void teOnChar (HWND hWnd, PTEDATA ptedata, WPARAM wParam)
                rcInv.top += ptedata->nLineHeight;
                rcInv.bottom = rcInv.top + ptedata->nLineHeight  - ptedata->nLineBaseH;
                REFRESH_NODE_EX(node, &rcInv);
+             //   UpdateWindow(hWnd, FALSE);
            }
            /* houhh 20090814, UpdataWindow will invalidate all edit area, but
             * erase area is not same with msg_paint area.*/
-            UpdateInvalidClient(hWnd, TRUE);
+            UpdateWindow(hWnd, FALSE);
+            //SendMessage(hWnd, MSG_PAINT, 0, 0);
        }
    }
    else {
@@ -15,7 +15,7 @@
 *   and Graphics User Interface (GUI) support system for embedded systems
 *   and smart IoT devices.
 *
- *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
 *   Copyright (C) 1998~2002, WEI Yongming
 *
 *   This program is free software: you can redistribute it and/or modify
@@ -283,7 +283,7 @@ static void DrawCoolBox (HWND hWnd, HDC hdc, PCOOLBARCTRL pdata)
            WINDOWINFO *info;
            RECT rc;

-            if (tmpdata->Caption [0] == '\0')
+            if (tmpdata->Caption == NULL || tmpdata->Caption [0] == '\0')
                break;

            GetTextExtent (hdc, tmpdata->Caption, -1, &size);
@@ -80,17 +80,17 @@ static void update_viewport (gvGridViewData *view, int from, int to, int is_row)
 {
    RECT r;

-    GetClientRect(view->hCtrl, &r);
+    GetClientRect (view->hCtrl, &r);

    if (is_row) {
        r.top = from;
-        ScrollWindow(view->hCtrl, 0, to, &r, NULL);
+        ScrollWindow (view->hCtrl, 0, to, &r, NULL);
    }
    else {
        r.left = from;
-        ScrollWindow(view->hCtrl, to, 0, &r, NULL);
+        ScrollWindow (view->hCtrl, to, 0, &r, NULL);
    }
-    UpdateInvalidClient(view->hCtrl, FALSE);
+    UpdateWindow(view->hCtrl, FALSE);
 }

 // scroll function {{{
@@ -157,8 +157,6 @@ static int isInItem (MgList *mglst, int mouseX, int mouseY,

    index = row * pivlist->nCol + col;
    pci = (IconviewItem *)mglist_getitem_byindex (mglst, index);
-    if (pci == NULL)
-        return -1;

    if (pRet)
        *pRet = (MgItem*)pci;
@@ -93,15 +93,14 @@ BOOL RegisterTreeViewControl (void)
    const WINDOW_ELEMENT_RENDERER * rdr =
        GetDefaultWindowElementRenderer();

-    if (!(icon_fold = (HICON)RetrieveRes(gui_GetIconFile(rdr->name,
-                        SYSICON_FOLD, szValue)))) {
+
+    if (!(icon_fold = (HICON)RetrieveRes(gui_GetIconFile(rdr->name, SYSICON_FOLD, szValue)))) {
        if (!(icon_fold = LoadSystemIcon (SYSICON_FOLD, 0))) {
            return FALSE;
        }
    }

-    if (!(icon_unfold = (HICON)RetrieveRes(gui_GetIconFile(rdr->name,
-                        SYSICON_UNFOLD, szValue)))) {
+    if (!(icon_unfold = (HICON)RetrieveRes(gui_GetIconFile(rdr->name, SYSICON_UNFOLD, szValue)))) {
        if (!(icon_unfold = LoadSystemIcon (SYSICON_UNFOLD, 0))) {
            DestroyIcon (icon_fold);
            icon_fold = 0;
@@ -181,7 +180,6 @@ static BOOL tvInitTVData (HWND hwnd, PTVDATA pData, DWORD dwStyle, PTVITEMINFO r
            tvRoot->hIconFold = root_ii->hIconFold;
        else
            tvRoot->hIconFold = ICON_FOLD;
-
        if (root_ii && root_ii->hIconUnfold)
            tvRoot->hIconUnfold = root_ii->hIconUnfold;
        else
@@ -634,13 +632,22 @@ static void tvDrawItem (HWND hWnd, HDC hdc, PTVDATA pData, int centerX, int cent
    centerX += (h>>1) + TV_BOXGAP;

    if (pData->dwStyle & TVS_WITHICON) {
-        if (p->child != NULL && (p->dwFlags & TVIF_FOLD)) {
+        if (!(pData->dwStyle & TVS_ICONFORSELECT)
+                && (!p->child || (p->dwFlags & TVIF_FOLD))) {
            if ((p->hIconFold)) {
-                DrawIcon (hdc, centerX,  centerY - (h>>1), h, h, p->hIconFold);
+                DrawIcon (hdc, centerX, centerY - (h>>1),
+                        h, h, p->hIconFold);
+            }
+        } else if ((pData->dwStyle & TVS_ICONFORSELECT) && p->dwFlags & TVIF_SELECTED) {
+            if ((p->hIconFold)) {
+                DrawIcon (hdc, centerX, centerY - (h>>1),
+                        h, h, p->hIconFold);
+            }
+        } else
+            if ((p->hIconUnfold)) {
+                DrawIcon (hdc, centerX, centerY - (h>>1),
+                        h, h, p->hIconUnfold);
            }
-        } else if ((p->hIconUnfold)) {
-            DrawIcon (hdc, centerX, centerY - (h>>1), h, h, p->hIconUnfold);
-        }
        centerX += h + TV_ICONGAP;
    }

@@ -202,17 +202,6 @@ static void destroy (GLYPHTREENODE *root)

 /*** device font ops ***/

-static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
-        enum devfont_feature feature)
-{
-    switch (feature) {
-    case DEVFONT_FEATURE_MARK_BBOX:
-        return 0;
-    }
-
-    return 0;
-}
-
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
    return DEVFONTGLYPHTYPE_PRERDRBMP;
@@ -391,7 +380,6 @@ static int get_glyph_bbox (LOGFONT* logfont, DEVFONT* devfont,

 /**************************** Global data ************************************/
 FONTOPS __mg_bitmap_font_ops = {
-    get_feature,
    get_glyph_bmptype,
    get_ave_width,
    get_max_width,
@@ -15,7 +15,7 @@
 *   and Graphics User Interface (GUI) support system for embedded systems
 *   and smart IoT devices.
 *
- *   Copyright (C) 2002~2023, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
 *   Copyright (C) 1998~2002, WEI Yongming
 *
 *   This program is free software: you can redistribute it and/or modify
@@ -226,7 +226,7 @@ static int iso8859_6_conv_from_uc32 (Uchar32 wc, unsigned char* mchar)
 }
 #endif

-#if 0
+/* must attetion the para s is arabic chv value.*/
 static int is_arabic_char_vowel(Uint8 c)
 {

@@ -240,7 +240,6 @@ static int is_arabic_char_vowel(Uint8 c)
    */
    return 0;
 }
-#endif

 /* ISO8859-6 charset vowel relative define and judge */
 #define ISARABIC_VOWEL(s) ((s >= FATHATAN) && (s <= SUKUN))
@@ -462,18 +461,15 @@ static int iso8859_6_len_first_char (const unsigned char* mstr, int len)
        return 2;
    else if (ignore == 2)
        return 3;
+    else
+        return 1;

-    return 1;
 }

 #define ISARABIC_LIG_HALF(s) ((s == 0xa5) || (s == 0xa6))

 static unsigned int iso8859_6_char_type (Achar32 chv)
 {
-    chv = REAL_ACHAR(chv);
-#if 1
-    return sb_char_type(chv);
-#else
    unsigned int ch_type = ACHAR_BASIC_UNKNOWN;

    if (is_arabic_char_vowel (chv)) {  /* is vowel */
@@ -484,10 +480,10 @@ static unsigned int iso8859_6_char_type (Achar32 chv)
    }

    return ch_type;
-#endif
 }

 static BidiType __mg_iso8859_6_bidi_char_type_map[] = {
+#if 0
    /*0x00~0x0f*/
    BIDI_TYPE_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,
    BIDI_TYPE_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,  BIDI_TYPE_BN,
@@ -535,6 +531,7 @@ static BidiType __mg_iso8859_6_bidi_char_type_map[] = {
    BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_LTR,
    BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_LTR, BIDI_TYPE_ON,
    BIDI_TYPE_ON,  BIDI_TYPE_ON,  BIDI_TYPE_ON,  BIDI_TYPE_BN,
+#endif

    /*0x80~0x8f*/
    BIDI_TYPE_ON,  BIDI_TYPE_AL,  BIDI_TYPE_AL,  BIDI_TYPE_AL,
@@ -609,9 +606,10 @@ static BidiType __mg_iso8859_6_bidi_char_type_map[] = {
 static BidiType iso8859_6_bidi_char_type (Achar32 chv)
 {
    chv = REAL_ACHAR(chv);
-    assert(chv < TABLESIZE(__mg_iso8859_6_bidi_char_type_map));
-
-    return (BidiType)__mg_iso8859_6_bidi_char_type_map[chv];
+    if (chv > 0x7F)
+        return (BidiType)__mg_iso8859_6_bidi_char_type_map[chv - 0x80];
+    else
+        return (BidiType)__mg_iso8859_1_bidi_char_type_map[chv];
 }

 static int get_table_index(Uint8 c)
@@ -798,7 +796,7 @@ static const unsigned char* iso8859_6_get_next_word (const unsigned char* mstr,
 static Achar32 iso8859_6_get_shaped_char_value (const unsigned char* cur_mchar,
        int cur_len, int shape_type)
 {
-    Achar32 chv = INV_ACHAR_VALUE;
+    Achar32 chv = -1;
    int ignore;
    int index;

@@ -813,14 +811,15 @@ static Achar32 iso8859_6_get_shaped_char_value (const unsigned char* cur_mchar,
        }
    }

-    if (chv == INV_ACHAR_VALUE || chv == 0) {
+    if (chv == -1 || chv == 0) {
        if (ISARABIC_VOWEL(*cur_mchar)){
            chv = fontset_68x_get_vowel_char(*cur_mchar);
        }

-        if (chv == 0 || chv == INV_ACHAR_VALUE) {
+        if (chv == 0 || chv == -1) {
            index = get_table_index(*cur_mchar);
-            if (index >=0 ) {
+            if (index >=0)
+            {
                switch (shape_type) {
                    case ACHAR_ISOLATED:
                        chv = shape_info[index].isolated;
@@ -842,7 +841,7 @@ static Achar32 iso8859_6_get_shaped_char_value (const unsigned char* cur_mchar,
    }

    if (chv == 0)
-        chv = INV_ACHAR_VALUE;
+        chv =-1;

    return chv;
 }
@@ -863,7 +862,6 @@ static const BIDICHAR_MIRROR_MAP __mg_iso8859_68x_mirror_table [] =

 static BOOL iso8859_6_bidi_mirror_char (Achar32 chv, Achar32* mirrored)
 {
-    chv = REAL_ACHAR(chv);
    return get_mirror_char (__mg_iso8859_68x_mirror_table,
            TABLESIZE (__mg_iso8859_68x_mirror_table), chv, mirrored);
 }
@@ -873,7 +871,6 @@ static CHARSETOPS CharsetOps_iso8859_6 = {
    3,
    FONT_CHARSET_ISO8859_6,
    0,
-    1,
    iso8859_6_len_first_char,
    iso8859_6_get_char_value,
    iso8859_6_get_shaped_char_value,
@@ -15,7 +15,7 @@
 *   and Graphics User Interface (GUI) support system for embedded systems
 *   and smart IoT devices.
 *
- *   Copyright (C) 2002~2023, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
 *   Copyright (C) 1998~2002, WEI Yongming
 *
 *   This program is free software: you can redistribute it and/or modify
@@ -210,8 +210,6 @@ static unsigned int unicode_char_type (Achar32 chv)
        mchar_type = ACHAR_BASIC_LF;
    else if (break_type == UCHAR_BREAK_SPACE)
        mchar_type = ACHAR_BASIC_SPACE;
-    else if (basic_type == UCHAR_CATEGORY_NON_SPACING_MARK)
-        mchar_type = ACHAR_BASIC_VOWEL;
    else if (chv != 0x00AD && ISZEROWIDTHTYPE (basic_type))
        mchar_type = ACHAR_BASIC_ZEROWIDTH;
    else if ((chv >= 0x1160 && chv < 0x1200)
@@ -241,36 +239,10 @@ static const BidiType linear_enum_to_bidi_type[] = {
 #undef _UNIBIDI_ADD_TYPE
 };

-/* Since 5.0.13: this function only returns BidiType which
-   is recognizable by the legacy BIDI algorithm. */
 static BidiType unicode_bidi_char_type(Achar32 ch)
 {
    ch = REAL_ACHAR(ch);
-    BidiType bt = linear_enum_to_bidi_type[UNIBIDI_GET_BIDI_TYPE(ch)];
-
-    switch (bt) {
-        case BIDI_TYPE_LTR:
-        case BIDI_TYPE_RTL:
-        case BIDI_TYPE_AL:
-        case BIDI_TYPE_EN:
-        case BIDI_TYPE_AN:
-        case BIDI_TYPE_ET:
-        case BIDI_TYPE_CS:
-        case BIDI_TYPE_NSM:
-        case BIDI_TYPE_BN:
-        case BIDI_TYPE_BS:
-        case BIDI_TYPE_SS:
-        case BIDI_TYPE_WS:
-        case BIDI_TYPE_ON:
-        case BIDI_TYPE_SOT:
-        case BIDI_TYPE_EOT:
-            return bt;
-        default:
-            _DBG_PRINTF("Not recognizable for char (0x%04x): %u\n", ch, bt);
-            break;
-    }
-
-    return BIDI_TYPE_WS;
+    return linear_enum_to_bidi_type[UNIBIDI_GET_BIDI_TYPE(ch)];
 }

 BidiType GUIAPI UCharGetBidiType(Uchar32 uc)
@@ -656,7 +628,6 @@ CHARSETOPS __mg_CharsetOps_utf8 = {
    6,
    FONT_CHARSET_UTF8,
    0,
-    0,
    utf8_len_first_char,
    utf8_get_char_value,
    NULL,
@@ -883,7 +854,6 @@ CHARSETOPS __mg_CharsetOps_utf16le = {
    4,
    FONT_CHARSET_UTF16LE,
    0,
-    0,
    utf16le_len_first_char,
    utf16le_get_char_value,
    NULL,
@@ -1110,7 +1080,6 @@ CHARSETOPS __mg_CharsetOps_utf16be = {
    4,
    FONT_CHARSET_UTF16BE,
    0,
-    0,
    utf16be_len_first_char,
    utf16be_get_char_value,
    NULL,
@@ -255,17 +255,6 @@ compute_kernval (TTFINSTANCEINFO* ttf_inst_info)
    return kernval;
 }

-static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
-        enum devfont_feature feature)
-{
-    switch (feature) {
-    case DEVFONT_FEATURE_MARK_BBOX:
-        return 0;
-    }
-
-    return 0;
-}
-
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
    if (logfont->style & FS_WEIGHT_BOOK)
@@ -803,7 +792,6 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)
 }
 /**************************** Global data ************************************/
 FONTOPS __mg_ttf_ops = {
-    get_feature,
    get_glyph_bmptype,
    get_ave_width,
    get_max_width,
@@ -197,17 +197,6 @@ print_bitmap_grey (const BYTE* buffer, int width, int rows, int pitch)
    printf("*******************************************\n");
 }

-static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
-        enum devfont_feature feature)
-{
-    switch (feature) {
-    case DEVFONT_FEATURE_MARK_BBOX:
-        return 1;
-    }
-
-    return 0;
-}
-
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
    switch (logfont->style & FS_RENDER_MASK) {
@@ -1276,7 +1265,6 @@ void font_TermFreetypeLibrary (void)

 /**************************** Global data ************************************/
 FONTOPS __mg_ttf_ops = {
-    get_feature,
    get_glyph_bmptype,
    get_ave_width,
    get_max_width,
@@ -703,20 +703,21 @@ void __mg_legacy_bidi_get_embeddlevels (const CHARSETOPS* charset_ops,
    print_hexstr(achars, len, TRUE);
 }

+#if 0
 static void bidi_map_reverse (void* context, int len, int pos)
 {
-    ACHARMAPINFO* str = (ACHARMAPINFO*)context + pos;
+    GLYPHMAPINFO* str = (GLYPHMAPINFO*)context + pos;
    int i;
    for (i = 0; i < len / 2; i++)
    {
-        ACHARMAPINFO tmp = str[i];
+        GLYPHMAPINFO tmp = str[i];
        str[i] = str[len - 1 - i];
        str[len - 1 - i] = tmp;
    }
 }

 Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
-        Achar32* achars, int len, int pel, ACHARMAPINFO* map)
+        Achar32* achars, int len, GLYPHMAPINFO* map, int pel)
 {
    BYTE max_level = 1;
    TYPERUN *type_rl_list = NULL;
@@ -724,7 +725,6 @@ Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
    int i;
    int run_pos;
    int run_len;
-    REORDER_CONTEXT rc;

    print_hexstr(achars, len, FALSE);

@@ -735,15 +735,14 @@ Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
        run_pos = node_p->pos;
        run_len = node_p->len;

-        for (i=0; i<run_len; i++) {
+        for (i=0; i<run_len; i++)
+        {
            (map+run_pos+i)->is_rtol = (node_p)->level & 1;
        }
    }

-    rc.achars = NULL;
-    rc.extra = map;
-    rc.cb = bidi_map_reverse;
-    bidi_reorder(&rc, len, &type_rl_list, max_level);
+    bidi_reorder_cb(map, len, &type_rl_list, max_level,
+            bidi_map_reverse);

    /* free typerun list.*/
    free_typerun_list(type_rl_list);
@@ -753,23 +752,18 @@ Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
    return achars;
 }

-#if 0
 Achar32* __mg_legacy_bidi_index_reorder (const CHARSETOPS* charset_ops,
        Achar32* achars, int len, int* index_map, int pel)
 {
    BYTE max_level = 1;
    TYPERUN *type_rl_list = NULL;
-    REORDER_CONTEXT rc;

    print_hexstr(achars, len, FALSE);

    /* W1~W7, N1~N2, I1~I2, Get the Embedding Level. */
    bidi_resolve_string (charset_ops, achars, len, pel, &type_rl_list, &max_level);

-    rc.achars = achars;
-    rc.extra = extra;
-    rc.cb = cb_reverse_extra;
-    bidi_reorder(index_map, len, &type_rl_list, max_level,
+    bidi_reorder_cb(index_map, len, &type_rl_list, max_level,
            bidi_string_reverse);

    /* free typerun list.*/
@@ -66,17 +66,6 @@
 #define NUF_WIDTH   8
 #define NUF_HEIGHT  1

-static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
-        enum devfont_feature feature)
-{
-    switch (feature) {
-    case DEVFONT_FEATURE_MARK_BBOX:
-        return 0;
-    }
-
-    return 0;
-}
-
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
    return DEVFONTGLYPHTYPE_MONOBMP;
@@ -182,7 +171,6 @@ static void unload_font_data (DEVFONT* devfont, void* data)
 }

 FONTOPS __mg_null_font_ops = {
-    get_feature,
    get_glyph_bmptype,
    get_ave_width,
    get_max_width,
@@ -287,17 +287,6 @@ static unsigned char def_smooth_bitmap [] =
 static QPF_GLYPH def_glyph = {&def_metrics, def_bitmap};
 static QPF_GLYPH def_smooth_glyph = {&def_smooth_metrics, def_smooth_bitmap};

-static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
-        enum devfont_feature feature)
-{
-    switch (feature) {
-    case DEVFONT_FEATURE_MARK_BBOX:
-        return 0;
-    }
-
-    return 0;
-}
-
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
    if (QPFONT_INFO_P (devfont)->fm->flags & FLAG_MODE_SMOOTH)
@@ -552,7 +541,6 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)

 /**************************** Global data ************************************/
 FONTOPS __mg_qpf_ops = {
-    get_feature,
    get_glyph_bmptype,
    get_ave_width,
    get_max_width,
@@ -151,17 +151,6 @@ static void unload_font_data (DEVFONT* devfont, void* data)

 /*************** Raw bitmap font operations *********************************/

-static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
-        enum devfont_feature feature)
-{
-    switch (feature) {
-    case DEVFONT_FEATURE_MARK_BBOX:
-        return 0;
-    }
-
-    return 0;
-}
-
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
    return DEVFONTGLYPHTYPE_MONOBMP;
@@ -291,7 +280,6 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)

 /**************************** Global data ************************************/
 FONTOPS __mg_rbf_ops = {
-    get_feature,
    get_glyph_bmptype,
    get_ave_width,
    get_ave_width,  // max_width same as ave_width
@@ -377,17 +377,6 @@ static int get_max_width (LOGFONT* logfont, DEVFONT* devfont)
    return logfont->size;
 }

-static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
-        enum devfont_feature feature)
-{
-    switch (feature) {
-    case DEVFONT_FEATURE_MARK_BBOX:
-        return 0;
-    }
-
-    return 0;
-}
-
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
    if (logfont->style & FS_WEIGHT_BOOK)
@@ -609,7 +598,6 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)

 /**************************** Global data ************************************/
 static FONTOPS scripteasy_font_ops = {
-    get_feature,
    get_glyph_bmptype,
    get_ave_width,
    get_max_width,
@@ -155,10 +155,7 @@ BOOL mg_InitSysFont (void)
                goto error_load;
            }

-            /* VW 20221003: use CreateLogFontEx instead of CreateLogFont to
-               follow the new style convention of font name,
-               but the orientation is ignored for the system logfont. */
-            if ((sys_fonts[i] = CreateLogFontEx (type, family, charset,
+            if ((sys_fonts[i] = CreateLogFont (type, family, charset,
                    style [0], style [1], style [2],
                    style [3], style [4], style [5],
                    height, 0)) == NULL) {
@@ -377,8 +377,8 @@ static _GBType resolve_gbt(struct break_ctxt* ctxt,
                uc == 0x8E2 || uc == 0xD4E || uc == 0x110BD ||
                (uc >= 0x111C2 && uc <= 0x111C3)) {
            gbt = GB_Prepend;
+            break;
        }
-        break;

    case UCHAR_CATEGORY_CONTROL:
    case UCHAR_CATEGORY_LINE_SEPARATOR:
@@ -393,8 +393,8 @@ static _GBType resolve_gbt(struct break_ctxt* ctxt,
        if ((uc >= 0xFFF0 && uc <= 0xFFF8) ||
                (uc >= 0xE0000 && uc <= 0xE0FFF)) {
            gbt = GB_ControlCRLF;
+            break;
        }
-        break;

    case UCHAR_CATEGORY_OTHER_LETTER:
        if (ctxt->makes_hangul_syllable)
@@ -434,6 +434,7 @@ static _GBType resolve_gbt(struct break_ctxt* ctxt,
                gbt = GB_RI_Odd;
            else
                gbt = GB_RI_Odd;
+            break;
        }
        break;

@@ -148,17 +148,6 @@ static void unload_font_data (DEVFONT* devfont, void* data)
    free (((UPFINFO*) data));
 }

-static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
-        enum devfont_feature feature)
-{
-    switch (feature) {
-    case DEVFONT_FEATURE_MARK_BBOX:
-        return 0;
-    }
-
-    return 0;
-}
-
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
    Uint8* p_upf = (Uint8 *)UPFONT_INFO_P (devfont)->root_dir;
@@ -536,7 +525,6 @@ static int is_rotatable (LOGFONT* logfont, DEVFONT* devfont, int rot_desired)
 }

 FONTOPS __mg_upf_ops = {
-    get_feature,
    get_glyph_bmptype,
    get_ave_width,
    get_max_width,
@@ -109,17 +109,6 @@ typedef struct _FONT_PROPT {
    int def_glyph;
 } FONT_PROPT;

-static DWORD get_feature (LOGFONT* logfont, DEVFONT* devfont,
-        enum devfont_feature feature)
-{
-    switch (feature) {
-    case DEVFONT_FEATURE_MARK_BBOX:
-        return 0;
-    }
-
-    return 0;
-}
-
 static DWORD get_glyph_bmptype (LOGFONT* logfont, DEVFONT* devfont)
 {
    return DEVFONTGLYPHTYPE_MONOBMP;
@@ -488,7 +477,6 @@ static void unload_font_data (DEVFONT* devfont, void* data)
 }

 FONTOPS __mg_vbf_ops = {
-    get_feature,
    get_glyph_bmptype,
    get_ave_width,
    get_max_width,
@@ -59,6 +59,7 @@
 #include "cliprect.h"
 #include "gal.h"
 #include "internals.h"
+#include "blockheap.h"
 #include "accelkey.h"

 static BLOCKHEAP ACHeap;
@@ -59,22 +59,17 @@
 #include "cliprect.h"
 #include "gal.h"
 #include "internals.h"
-#include "dc.h"

 BOOL GUIAPI CreateCaret (HWND hWnd, PBITMAP pBitmap, int nWidth, int nHeight)
 {
    PMAINWIN pWin;
+
    pWin = (PMAINWIN)hWnd;

    if (!pWin->pCaretInfo) {
-        HDC hdc;
-
        if (!(pWin->pCaretInfo = malloc (sizeof (CARETINFO))))
            return FALSE;

-        /* Since 5.0.11: use client DC of the window instead of screen DC */
-        hdc = GetClientDC(hWnd);
-
        pWin->pCaretInfo->pBitmap = pBitmap;
        if (pBitmap) {
            nWidth  = pBitmap->bmWidth;
@@ -83,22 +78,18 @@ BOOL GUIAPI CreateCaret (HWND hWnd, PBITMAP pBitmap, int nWidth, int nHeight)
        pWin->pCaretInfo->nWidth  = nWidth;
        pWin->pCaretInfo->nHeight = nHeight;
        pWin->pCaretInfo->caret_bmp.bmType = BMP_TYPE_NORMAL;
-        pWin->pCaretInfo->caret_bmp.bmBitsPerPixel =
-            GetGDCapability(hdc, GDCAP_BITSPP);
-        pWin->pCaretInfo->caret_bmp.bmBytesPerPixel =
-            GetGDCapability(hdc, GDCAP_BPP);
+        pWin->pCaretInfo->caret_bmp.bmBitsPerPixel = BITSPERPHYPIXEL;
+        pWin->pCaretInfo->caret_bmp.bmBytesPerPixel = BYTESPERPHYPIXEL;
        pWin->pCaretInfo->caret_bmp.bmWidth = nWidth;
        pWin->pCaretInfo->caret_bmp.bmHeight = nHeight;
        pWin->pCaretInfo->caret_bmp.bmAlphaMask = NULL;
        pWin->pCaretInfo->caret_bmp.bmAlphaPitch = 0;

-        pWin->pCaretInfo->nBytesNr = GAL_GetBoxSize (dc_HDC2PDC(hdc)->surface,
+        pWin->pCaretInfo->nBytesNr = GAL_GetBoxSize (__gal_screen,
                        nWidth, nHeight, &pWin->pCaretInfo->caret_bmp.bmPitch);
        pWin->pCaretInfo->pNormal = malloc (pWin->pCaretInfo->nBytesNr);
        pWin->pCaretInfo->pXored  = malloc (pWin->pCaretInfo->nBytesNr);

-        ReleaseDC(hdc);
-
        if (pWin->pCaretInfo->pNormal == NULL ||
            pWin->pCaretInfo->pXored == NULL) {
            free (pWin->pCaretInfo);
@@ -228,8 +219,8 @@ void GetCaretBitmaps (PCARETINFO pCaretInfo)
    int i;
    int sx, sy;
    HDC hdc;
-    Uint32 amask;

+    // convert to screen coordinates
    sx = pCaretInfo->x;
    sy = pCaretInfo->y;

@@ -240,68 +231,36 @@ void GetCaretBitmaps (PCARETINFO pCaretInfo)
                    pCaretInfo->caret_bmp.bmWidth,
                    pCaretInfo->caret_bmp.bmHeight,
                    &pCaretInfo->caret_bmp);
-    amask = GetGDCapability(hdc, GDCAP_AMASK);
    ReleaseDC (hdc);

    // generate XOR bitmap.
-    if (amask == 0) {
+    if (pCaretInfo->pBitmap) {
        BYTE* normal;
        BYTE* bitmap;
        BYTE* xored;

        normal = pCaretInfo->pNormal;
+        bitmap = pCaretInfo->pBitmap->bmBits;
        xored  = pCaretInfo->pXored;

-        if (pCaretInfo->pBitmap) {
-            bitmap = pCaretInfo->pBitmap->bmBits;
-            for (i = 0; i < pCaretInfo->nBytesNr; i++)
-                xored[i] = normal[i] ^ bitmap[i];
-        }
-        else {
-            for (i = 0; i < pCaretInfo->nBytesNr; i++)
-                xored[i] = normal[i] ^ 0xFF;
-        }
+        for (i = 0; i < pCaretInfo->nBytesNr; i++)
+            xored[i] = normal[i] ^ bitmap[i];
    }
    else {
-        // Since 5.0.11: restore the alpha component if having alpha component.
-        int x, y;
        BYTE* normal;
        BYTE* xored;
-        BYTE* bitmap = NULL;
-        gal_pixel pix_normal, pix_bitmap, pix_xored, bits_alpha;
+        BYTE xor_byte;

-        for (y = 0; y < pCaretInfo->caret_bmp.bmHeight; y++) {
-            normal = pCaretInfo->pNormal + pCaretInfo->caret_bmp.bmPitch * y;
-            xored  = pCaretInfo->pXored  + pCaretInfo->caret_bmp.bmPitch * y;
-            if (pCaretInfo->pBitmap)
-                bitmap = pCaretInfo->pBitmap->bmBits +
-                    pCaretInfo->caret_bmp.bmPitch * y;
+        if (BITSPERPHYPIXEL < 8)
+            xor_byte = 0x0F;
+        else
+            xor_byte = 0xFF;

-            for (x = 0; x < pCaretInfo->caret_bmp.bmWidth; x++) {
+        normal = pCaretInfo->pNormal;
+        xored  = pCaretInfo->pXored;

-                pix_normal = _mem_get_pixel(normal,
-                        pCaretInfo->caret_bmp.bmBytesPerPixel);
-                if (pCaretInfo->pBitmap) {
-                    pix_bitmap = _mem_get_pixel(bitmap,
-                            pCaretInfo->caret_bmp.bmBytesPerPixel);
-                }
-                else {
-                    pix_bitmap = 0xFFFFFFFF;
-                }
-
-                bits_alpha = pix_normal & amask;
-                pix_xored = pix_normal ^ pix_bitmap;
-                pix_xored &= ~amask;
-                pix_xored |= bits_alpha;
-                _mem_set_pixel(xored,
-                        pCaretInfo->caret_bmp.bmBytesPerPixel, pix_xored);
-
-                normal += pCaretInfo->caret_bmp.bmBytesPerPixel;
-                xored  += pCaretInfo->caret_bmp.bmBytesPerPixel;
-                if (pCaretInfo->pBitmap)
-                    bitmap += pCaretInfo->caret_bmp.bmBytesPerPixel;
-            }
-        }
+        for (i = 0; i < pCaretInfo->nBytesNr; i++)
+            xored[i] = normal[i] ^ xor_byte;
    }
 }

@@ -15,7 +15,7 @@
 *   and Graphics User Interface (GUI) support system for embedded systems
 *   and smart IoT devices.
 *
- *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
 *   Copyright (C) 1998~2002, WEI Yongming
 *
 *   This program is free software: you can redistribute it and/or modify
@@ -803,7 +803,7 @@ BOOL GUIAPI InitWindowElementAttrs (PWERENDERER rdr)
    char buff [20];
    DWORD rgba;

-    if (!rdr || rdr->name[0] == '\0')
+    if (!rdr || !rdr->name || rdr->name[0] == '\0')
        return FALSE;

    _DBG_PRINTF ("GUI>InitWEA: Initialize %s renderer window element attributes.\n",
@@ -71,6 +71,7 @@
 #include "cliprect.h"
 #include "gal.h"
 #include "internals.h"
+#include "blockheap.h"
 #include "menu.h"

 #define SHORTEN 0
@@ -2185,7 +2186,7 @@ static int create_memdc_for_menu (TRACKMENUINFO* ptmi)
        return -1;
    }

-    ptmi->dc = __mg_create_memdc_for_surface (surf);
+    ptmi->dc = CreateMemDCFromSurface (surf);
    if (ptmi->dc == HDC_INVALID) {
        GAL_FreeSurface (surf);
        return -1;
@@ -319,19 +319,6 @@ static void flush_rec (void)
 #endif
 }

-static void close_rec (void)
-{
-#ifdef WIN32
-    /* TODO: */
-#else
-    if (record_fd >= 0) {
-        close(record_fd);
-        record_fd = -1;
-    }
-#endif
-}
-
-

 static void do_record(AUTO_IAL_INPUT_EVENT *event)
 {
@@ -757,7 +744,6 @@ void TermPCXVFBInput (void)
        remove("/tmp/.pcxvfb_tmp");
    }
 #endif
-    close_rec();
 #endif /* WIN32 */
 }

@@ -3,7 +3,7 @@ noinst_HEADERS = \
    cursor.h dc.h event.h list.h element.h \
    ial.h inline.h internals.h zorder.h menu.h misc.h \
    msgstr.h sysfont.h timer.h devfont.h fontname.h \
-    readbmp.h icon.h rbtree.h \
+    readbmp.h icon.h blockheap.h rbtree.h \
    ourhdr.h client.h server.h sharedres.h sockio.h drawsemop.h \
    gal.h newgal.h memops.h incoreres.h sysres.h clipboard.h \
    glyph.h license.h mgsock.h unicode-ops.h \
@@ -112,11 +112,11 @@ void __mg_legacy_bidi_get_embeddlevels (const CHARSETOPS* charset_ops,
 Uint32 __mg_legacy_bidi_str_base_dir (const CHARSETOPS* charset_ops,
        Achar32* achars, int len);

-Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
-        Achar32* achars, int len, int pel, ACHARMAPINFO* map);
-
 #if 0
 // Deprecated
+Achar32* __mg_legacy_bidi_map_reorder (const CHARSETOPS* charset_ops,
+        Achar32* achars, int len, GLYPHMAPINFO* map, int pel);
+
 Achar32* __mg_legacy_bidi_index_reorder (const CHARSETOPS* charset_ops,
        Achar32* achars, int len, int* index_map, int pel);
 #endif
@@ -70,6 +70,7 @@ struct _SCALER_INFO_FILLBMP
 typedef struct {
    struct _SCALER_INFO_FILLBMP scaler_info;
    GAL_Rect dst_rect;
+    int old_bkmode;

    BYTE* decoded_buff;
    BYTE* decoded_alpha_buff;
@@ -47,8 +47,6 @@
 ** blockheap.h: the head file of heap for block data.
 **
 ** Create date: 2001/01/10
-**
-** DEPRECATED, USE window.h INSTEAD.
 */

 #ifndef GUI_BLOCKHEAP_H
@@ -57,7 +55,7 @@
 #ifndef _MGUI_GDI_H /* included in include/gdi.h */

 struct _BLOCKHEAP {
-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_t lock;
 #endif
    /* Size of one block element. */
@@ -105,10 +105,6 @@
 #define REQID_GETSHAREDSURFACE      0x001C
    // for compositing schema
    #define SYSSF_WALLPAPER_PATTER      "syssf-wallpaper-pattern"
-    #define APPSF_NAME_PREFIX           "appsf-name-"
-    #define APPSF_NAME_PATTER           "appsf-name-%s"
-    #define APPSF_HWND_PREFIX           "appsf-hwnd-"
-    #define APPSF_HWND_PATTER           "appsf-hwnd-%d-%p"
    // for sharedfb schema
    #define SYSSF_REAL_SCREEN           "syssf-real-screen"
    #define SYSSF_SHADOW_SCREEN         "syssf-shadow-screen"
@@ -117,22 +113,10 @@
 #define REQID_LOADCURSOR_PNG        0x001D
 // Load cursor from in-memory PNG
 #define REQID_LOADCURSOR_PNG_MEM    0x001E
-
-#if 0 // Deprecated since 5.2.0
 // allocate semaphore for shared surface
 #define REQID_ALLOC_SURF_SEM        0x001F
 // free semaphore of shared surface
 #define REQID_FREE_SURF_SEM         0x0020
-#endif
-
-/* Since 5.2.0 */
-// Operate a shared surface to register/revoke the name and set the fd
-#define REQID_OPERATENAMEDSSURF     0x001F
-    #define ID_NAMEDSSURFOP_REGISTER    1
-    #define ID_NAMEDSSURFOP_SET         2
-    #define ID_NAMEDSSURFOP_REVOKE      3
-
-#define REQID_RESERVED              0x0020

 // Move the current client to another layer
 #define REQID_MOVETOLAYER           0x0021
@@ -158,23 +142,15 @@ MGUI_COMPILE_TIME_ASSERT(sys_request_id, MAX_SYS_REQID >= REQID_SYS_LAST);

 #undef MGUI_COMPILE_TIME_ASSERT

-/* Since 5.2.0 */
-typedef struct OperateNSSurfInfo
-{
-    int     id_op;
-    char    name[NAME_MAX + 1];
-    size_t  map_size;
-} OPERATENSSURFINFO;
-
 /* Since 5.0.0 */
 typedef struct _SharedSurfInfo {
-    size_t      size;       // whole size of the surface
-    off_t       offset;     // offset of pixel data
    uint32_t    flags;      // the flags of the surface
    uint32_t    width, height;
    uint32_t    pitch;
    uint32_t    name;       // when use flink name
    uint32_t    drm_format; // DRM pixel format
+    size_t      size;       // whole size of the surface
+    off_t       offset;     // offset of pixel data
 } SHAREDSURFINFO;

 typedef struct JoinLayerInfo {
@@ -383,7 +359,6 @@ void __mg_start_client_desktop (void);

 void __mg_update_window (HWND hwnd, int left, int top, int right, int bottom);

-BOOL __mg_client_check_znode_hwnd (int slot, HWND hwnd, int cli);
 BOOL __mg_client_check_hwnd (HWND hwnd, int cli);
 BOOL __mg_client_on_layer_changed (GHANDLE layer_handle, int zi_shmid);

@@ -93,7 +93,7 @@ typedef struct tagDC* PDC;
 # else /* not defined _MGSCHEMA_COMPOSITING */
 void __mg_lock_recalc_gcrinfo (PDC pdc);
 void __mg_unlock_gcrinfo (PDC pdc);
-#define LOCK_GCRINFO(pdc)       if (dc_IsGeneralDC(pdc)) __mg_lock_recalc_gcrinfo (pdc)
+#define LOCK_GCRINFO(pdc)       __mg_lock_recalc_gcrinfo (pdc)
 #define UNLOCK_GCRINFO(pdc)     if (dc_IsGeneralDC(pdc)) __mg_unlock_gcrinfo (pdc)
 # endif /* not defined _MGSCHEMA_COMPOSITING */

@@ -167,8 +167,6 @@ struct tagDC
    /* surface of this DC */
    GAL_Surface* surface;

-    char __first_attr[0];   // just a zero-length field for the first attribute
-
    /* background color */
    gal_pixel bkcolor;

@@ -181,7 +179,7 @@ struct tagDC
    /* text color */
    gal_pixel textcolor;

-    int bkmode_set; /* the background mode set by user (5.0.12, Issue #107) */
+    int bkmode;

    int tabstop;
    int cExtra;     /* Character extra */
@@ -215,8 +213,6 @@ struct tagDC
    size_t dash_list_len;
 #endif

-    char __last_attr[0];   // just a zero-length field for the last attribute
-
    PLOGFONT pLogFont;

    POINT CurPenPos;
@@ -251,7 +247,6 @@ struct tagDC
    gal_pixel   skip_pixel;
    gal_pixel   cur_pixel;
    int         step;
-    int         bkmode;     /* the effective background mode */
    /* ====================================================================== */

    CLIPRECT* cur_ban;
@@ -521,16 +516,14 @@ static inline void _dc_step_y (PDC pdc, int step)

 #       define BLOCK_DRAW_SEM(pdc)                                  \
 do {                                                                \
-    if (pdc->surface->shared_header) {                              \
-        __mg_lock_file_for_write(pdc->surface->fd);                 \
-    }                                                               \
+    if (pdc->surface->shared_header)                                \
+        LOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);    \
 } while (0)

 #       define UNBLOCK_DRAW_SEM(pdc)                                \
 do {                                                                \
-    if (pdc->surface->shared_header) {                              \
-        __mg_unlock_file_for_write(pdc->surface->fd);               \
-    }                                                               \
+    if (pdc->surface->shared_header)                                \
+        UNLOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);  \
 } while (0)

 #       define IS_SCREEN_SURFACE(pdc)                       \
@@ -15,7 +15,7 @@
 *   and Graphics User Interface (GUI) support system for embedded systems
 *   and smart IoT devices.
 *
- *   Copyright (C) 2002~2023, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
 *   Copyright (C) 1998~2002, WEI Yongming
 *
 *   This program is free software: you can redistribute it and/or modify
@@ -209,9 +209,6 @@ struct _CHARSETOPS
    /** Default character. */
    Achar32 def_char_value;

-    /** Whether using legacy BIDI algorithm (Since 5.0.13). */
-    unsigned legacy_bidi:1;
-
    /** The method to get the length of the first character. */
    int (*len_first_char) (const unsigned char* mstr, int mstrlen);

@@ -266,17 +263,9 @@ struct _CHARSETOPS

 #define DEVFONTGLYPHTYPE_MASK_BMPTYPE   0x0F

-enum devfont_feature {
-    DEVFONT_FEATURE_MARK_BBOX = 0,
-};
-
 /** The font operation structure. */
 struct _FONTOPS
 {
-    /** The method to get the feature value of the font (Since 5.0.13). */
-    DWORD (*get_feature) (LOGFONT* logfont, DEVFONT* devfont,
-            enum devfont_feature feature);
-
    /** The method to get the glyph bitmap type . */
    DWORD (*get_glyph_bmptype) (LOGFONT* logfont, DEVFONT* devfont);

@@ -51,9 +51,11 @@
 #ifndef GUI_DRAWSEMOP_H
    #define GUI_DRAWSEMOP_H

-#include <errno.h>
+#ifdef __cplusplus
+extern "C" {
+#endif  /* __cplusplus */

-#include "misc.h"
+#include <errno.h>

 static inline void my_sem_op (int semid, int num, int op)
 {
@@ -68,9 +70,6 @@ again:
        if (errno == EINTR) {
            goto again;
        }
-        else {
-            _ERR_PRINTF("Failed semop: %m\n");
-        }
    }
 }

@@ -80,7 +79,10 @@ again:
 #define LOCK_SCREEN_SEM()   my_sem_op(SHAREDRES_SEMID, _IDX_SEM_SCR, -1)
 #define UNLOCK_SCREEN_SEM() my_sem_op(SHAREDRES_SEMID, _IDX_SEM_SCR, 1)

-extern int __mg_client_id;
+#ifdef _MGSCHEMA_COMPOSITING
+#   define LOCK_SURFACE_SEM(num)    my_sem_op(SHAREDRES_SEMID_SHARED_SURF, num, -1)
+#   define UNLOCK_SURFACE_SEM(num)  my_sem_op(SHAREDRES_SEMID_SHARED_SURF, num, 1)
+#endif

 #ifdef _MGHAVE_CURSOR

@@ -155,10 +157,6 @@ again:
 #   define UNLOCK_MOUSEMOVE_SEM()   my_sem_op(SHAREDRES_SEMID, _IDX_SEM_MOUSEMOVE, 1)
 #endif /* _MGRM_PROCESSES */

-#ifdef __cplusplus
-extern "C" {
-#endif  /* __cplusplus */
-
 #ifdef __cplusplus
 }
 #endif  /* __cplusplus */
@@ -127,9 +127,6 @@ typedef LWEVENT* PLWEVENT;
 extern "C" {
 #endif  /* __cplusplus */

-extern DWORD __mg_timeout_usec;
-extern DWORD __mg_repeat_usec;
-
 // The entrance of low level event handling thread
 BOOL mg_InitLWEvent (void);
 void mg_TerminateLWEvent (void);
@@ -84,18 +84,15 @@
 #define WS_EX_MODALDISABLED     0x10000000L

 /*
- * Internal extended style:
- *  The control can be displayed out of the main window
- *  which contains the control.
+ * \def WS_EX_CTRLASMAINWIN
+ * \brief The control can be displayed out of the main window
+ *        which contains the control.
 */
 #define WS_EX_CTRLASMAINWIN     0x20000000L

-/* Internal extended style: dialog box. */
+/* Internal extended style. */
 #define WS_EX_DIALOGBOX         0x40000000L

-/* Internal extended style: activated. */
-#define WS_EX_ACTIVATED         0x80000000L
-
 /* Make sure the internal window extended styles above are ok */
 #define MGUI_COMPILE_TIME_ASSERT(name, x)               \
       typedef int MGUI_dummy_ ## name[((x)?1:0) * 2 - 1]
@@ -104,10 +101,6 @@ MGUI_COMPILE_TIME_ASSERT(ws_ex_int_1,
        WS_EX_INTERNAL_MASK & WS_EX_MODALDISABLED);
 MGUI_COMPILE_TIME_ASSERT(ws_ex_int_2,
        WS_EX_INTERNAL_MASK & WS_EX_CTRLASMAINWIN);
-MGUI_COMPILE_TIME_ASSERT(ws_ex_int_3,
-        WS_EX_INTERNAL_MASK & WS_EX_DIALOGBOX);
-MGUI_COMPILE_TIME_ASSERT(ws_ex_int_4,
-        WS_EX_INTERNAL_MASK & WS_EX_ACTIVATED);

 #undef MGUI_COMPILE_TIME_ASSERT

@@ -258,7 +251,7 @@ struct _MSGQUEUE
    int loop_depth;             // message loop depth, for dialog boxes

    int idle_counter;           // the idle connter for MSG_IDLE
-    DWORD last_ticks;           // the last tick count saved; since 5.0.14
+    DWORD last_ticks_desktop;   // the last tick count for desktop timer

    /* Since 5.0.0, MiniGUI provides support for timers per message thread */
    int nr_timers;              // the number of active timers
@@ -779,8 +772,8 @@ static inline PMSGQUEUE getMsgQueue (HWND hWnd)
 }


-MSGQUEUE* mg_AllocMsgQueueForThisThread (BOOL sign_in);
-void mg_FreeMsgQueueForThisThread (BOOL sign_off);
+MSGQUEUE* mg_AllocMsgQueueForThisThread (void);
+void mg_FreeMsgQueueForThisThread (void);

 /* Since 5.0.0 */
 int __mg_throw_away_messages (PMSGQUEUE pMsgQueue, HWND hWnd);
@@ -911,9 +904,40 @@ static inline MSGQUEUE* getMsgQueueIfMainWindowInThisThread (PMAINWIN pMainWin)

 #endif  /* defined _MGHAVE_VIRTUAL_WINDOW */

-/* Since 5.0.14, remove arg use_sys_timer */
-BOOL mg_InitTimer (void);
-void mg_TerminateTimer (void);
+#if 0   /* deprecated code */
+/* since 5.0.0, we always use QS_DESKTIMER for desktop timer */
+/* since 5.0.0, we no longer use the timer thread */
+static inline void AlertDesktopTimerEvent (void)
+{
+    if (__mg_dsk_msg_queue) {
+        __mg_dsk_msg_queue->expired_timer_mask = 1;
+        POST_MSGQ (__mg_dsk_msg_queue);
+    }
+}
+
+static inline void AlertDesktopTimerEvent (void)
+{
+    __mg_dsk_msg_queue->dwState |= QS_DESKTIMER;
+#ifdef _MGHAVE_VIRTUAL_WINDOW
+    if (getMsgQueueForThisThread() != __mg_dsk_msg_queue)
+        POST_MSGQ (__mg_dsk_msg_queue);
+#endif  /* defined _MGHAVE_VIRTUAL_WINDOW */
+}
+
+static inline void setMsgQueueTimerFlag (PMSGQUEUE pMsgQueue, int slot)
+{
+    pMsgQueue->expired_timer_mask |= (0x01UL << slot);
+    POST_MSGQ (pMsgQueue);
+}
+
+static inline void removeMsgQueueTimerFlag (PMSGQUEUE pMsgQueue, int slot)
+{
+    pMsgQueue->expired_timer_mask &= ~(0x01UL << slot);
+}
+#endif /* deprecated code */
+
+BOOL mg_InitTimer (BOOL use_sys_timer);
+void mg_TerminateTimer (BOOL use_sys_timer);

 /*window element renderer manager interface*/
 extern WINDOW_ELEMENT_RENDERER * __mg_def_renderer;
@@ -927,7 +951,9 @@ BOOL gui_LoadIconRes(HDC hdc, const char* rdr_name, char* file);
 void gui_WndRect(HWND hWnd, PRECT prc);
 void gui_WndClientRect(HWND hWnd, PRECT prc);

-HDC __mg_create_memdc_for_surface (struct GAL_Surface* surface);
+/* Undisclosed APIs */
+HDC CreateMemDCFromSurface (struct GAL_Surface* surface);
+struct GAL_Surface* GetSurfaceFromDC (HDC hdc);

 /* Since 5.0.0 */
 #ifdef _MGRM_PROCESSES
@@ -83,11 +83,6 @@ static inline int comp_key_string (const void *key1, const void *key2)
    return strcmp (key1, key2);
 }

-static inline void free_val_alloc (void *val)
-{
-    free (val);
-}
-
 typedef struct _map_t map_t;
 typedef struct _map_entry_t {
    struct rb_node  node;
@@ -105,15 +100,8 @@ int __mg_map_get_size (map_t* map);

 map_entry_t* __mg_map_find (map_t* map, const void* key);

-map_entry_t* __mg_map_insert_ex2 (map_t* map, const void* key,
+int __mg_map_insert_ex (map_t* map, const void* key,
        const void* val, free_val_fn free_val_alt);
-
-static int __mg_map_insert_ex (map_t* map, const void* key,
-        const void* val, free_val_fn free_val_alt)
-{
-    return __mg_map_insert_ex2(map, key, val, NULL) ? 0 : -1;
-}
-
 static inline int  __mg_map_insert (map_t* map, const void* key,
        const void* val)
 {
@@ -126,7 +114,7 @@ int __mg_map_find_replace_or_insert (map_t* map, const void* key,
 int __mg_map_replace (map_t* map, const void* key,
        const void* val, free_val_fn free_val_alt);

-int __mg_map_erase (map_t* map, const void* key);
+int __mg_map_erase (map_t* map, void* key);
 int __mg_map_get_size (map_t* map);

 #if 0   /* deprecated code */
@@ -79,11 +79,6 @@ struct timezone {
 extern "C" {
 #endif  /* __cplusplus */

-void __mg_lock_file_for_read(int fd);
-void __mg_unlock_file_for_read(int fd);
-void __mg_lock_file_for_write(int fd);
-void __mg_unlock_file_for_write(int fd);
-
 unsigned int __mg_os_get_random_seed (void);
 void __mg_os_time_delay (int ms);
 void __mg_os_start_time (void);
@@ -120,11 +115,10 @@ void mg_TerminateMisc (void);
 BOOL mg_InitSystemRes (void);
 void mg_TerminateSystemRes (void);

-/* Deprecated since 5.2.0
 #ifdef _MGSCHEMA_COMPOSITING
 int __mg_alloc_sem_for_shared_surf (void);
 int __mg_free_sem_for_shared_surf (int sem_num);
-#endif _MGSCHEMA_COMPOSITING */
+#endif /* _MGSCHEMA_COMPOSITING */

 size_t __mg_lookfor_unused_slot (unsigned char* bitmap, size_t len_bmp, int set);

@@ -396,10 +396,10 @@ char * __mg_msgstr3 [] =
    "MSG_SRVNOTIFY",          // 0x0147
    "MSG_UPDATECLIWIN",       // 0x0148
    "MSG_LAYERCHANGED",       // 0x0149
-    "MSG_WINCOMPOSITED",      // 0x014A
-    "MSG_MANAGE_MSGTHREAD",   // 0x014B
-    "MSG_CALC_POSITION",      // 0x014C
-    "MSG_WAKEUP_CLIENT",      // 0x014D
+    "MSG_MANAGE_MSGTHREAD",   // 0x014A
+    "MSG_CALC_POSITION",      // 0x014B
+    "",                       // 0x014C
+    "",                       // 0x014D
    "",                       // 0x014E
    "",                       // 0x014F

@@ -55,9 +55,9 @@
 #ifndef GUI_NEWGAL_H
    #define GUI_NEWGAL_H

-#include "minigui.h"
 #include "gdi.h"
 #include "constants.h"
+#include "blockheap.h"

 #if IS_COMPOSITING_SCHEMA
 #include <sys/types.h>
@@ -117,10 +117,8 @@ void GAL_FreeFormat(GAL_PixelFormat *format);

 /* typedef for private surface blitting functions */
 struct GAL_Surface;
-
-typedef int (*GAL_blit)(GAL_VideoDevice *video,
-        struct GAL_Surface *src, GAL_Rect *srcrect,
-        struct GAL_Surface *dst, GAL_Rect *dstrect);
+typedef int (*GAL_blit)(struct GAL_Surface *src, GAL_Rect *srcrect,
+                        struct GAL_Surface *dst, GAL_Rect *dstrect);

 #if IS_COMPOSITING_SCHEMA
 typedef struct _DirtyInfo {
@@ -139,25 +137,20 @@ typedef struct _DirtyInfo {
 * than the creator.
 */
 typedef struct _SharedSurfaceHeader {
-    /* the name of the shared surface; since 5.2.0. */
-    char            name[NAME_MAX + 1];
+    /* The number of semphore for this surface.
+       The SysV semaphore set id for synchronizing this shared surface:
+       SHAREDRES_SEMID_SHARED_SURF. */
+    int             sem_num;

-    /* The client identifier of the creator. */
-    int             create_cli;
+    /* The pid of the creator */
+    pid_t           creator;

+    /* The file descriptor in context of the creator. */
+    int             fd;
    /* Not zero for hardware surface. */
    int             byhw;
-
-    /* Deprecated since 5.2.0.
-       The number of semphore for this surface.
-       The SysV semaphore set id for synchronizing this shared surface:
-       SHAREDRES_SEMID_SHARED_SURF.
-    int             sem_num; */
-
-    /* Deprecated since 5.2.0.
-       The file descriptor in context of the creator.
-    int             fd; */
-
+    /* The dirty information */
+    GAL_DirtyInfo   dirty_info;
    /* the size of the surface */
    int             width, height;
    /* the pitch of the surface */
@@ -171,9 +164,6 @@ typedef struct _SharedSurfaceHeader {
    size_t          map_size;
    /* the offset of pixels data */
    off_t           pixels_off;
-
-    /* The dirty information */
-    GAL_DirtyInfo   dirty_info;
 } GAL_SharedSurfaceHeader;
 #endif /* IS_COMPOSITING_SCHEMA */

@@ -238,8 +228,6 @@ typedef struct GAL_Surface {
    GAL_SharedSurfaceHeader *shared_header;     /* Private */
    /* The dirty info for non-shared surface. */
    GAL_DirtyInfo *dirty_info;                  /* Private */
-    /* The file descriptor if the surface is a shared surface. */
-    int  fd;                                    /* Private; since 5.2.0. */
 #endif
 } GAL_Surface;

@@ -262,8 +250,6 @@ typedef struct GAL_Surface {

 #define GAL_PREALLOC         0x01000000    /* Surface uses preallocated memory */
 #define GAL_FORMAT_CHECKED   0x02000000    /* Pixman format checked */
-#define GAL_SSURF_ATTACHED   0x04000000    /* The shared surface is attached to. */
-#define GAL_SSURF_LOCKED     0x08000000    /* The shared surface is locked. */

 /* Available for GAL_SetVideoMode() */
 #define GAL_ANYFORMAT        0x10000000     /* Allow any video depth/pixel-format */
@@ -583,11 +569,6 @@ GAL_Surface *GAL_CreateRGBSurface
 GAL_Surface *GAL_CreateRGBSurfaceFrom (void *pixels,
                        int width, int height, int depth, int pitch,
                        Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
-/* Since 5.2.0 */
-static GAL_Surface *GAL_RefSurface (GAL_Surface *surface) {
-    surface->refcount++;
-    return surface;
-}
 void GAL_FreeSurface (GAL_Surface *surface);

 typedef struct REQ_HWSURFACE {
@@ -668,11 +649,11 @@ GAL_Surface *GAL_CreateSurfaceForZNodeAs (const GAL_Surface* ref_surf,
 void GAL_FreeSharedSurfaceData (GAL_Surface *surface);

 /* Attach to a shared RGB surface. */
-GAL_Surface *GAL_AttachSharedRGBSurface (GAL_VideoDevice* video,
-        int fd, size_t map_size, Uint32 flags, BOOL with_wr);
+GAL_Surface *GAL_AttachSharedRGBSurface (int fd, size_t map_size,
+            Uint32 flags, BOOL with_wr);

-/* Detach from a shared RGB surface from the specific video device. */
-void GAL_DetachSharedSurfaceData (GAL_Surface *surface);
+/* Dettach from a shared RGB surface from the specific video device. */
+void GAL_DettachSharedSurfaceData (GAL_Surface *surface);

 /* Create a cursor surface from the specific video device. */
 GAL_Surface* GAL_CreateCursorSurface (GAL_VideoDevice* video,
@@ -689,6 +670,7 @@ void GAL_MoveCursor (GAL_Surface* surface, int x, int y);

 #endif /* defined _MGSCHEMA_COMPOSITING */

+#if 0
 /*
 * GAL_LockSurface() sets up a surface for directly accessing the pixels.
 * Between calls to GAL_LockSurface()/GAL_UnlockSurface(), you can write
@@ -698,7 +680,9 @@ void GAL_MoveCursor (GAL_Surface* surface, int x, int y);
 *
 * Not all surfaces require locking.  If GAL_MUSTLOCK(surface) evaluates
 * to 0, then you can read and write to the surface at any time, and the
- * pixel format of the surface will not change.
+ * pixel format of the surface will not change.  In particular, if the
+ * GAL_HWSURFACE flag is not given when calling GAL_SetVideoMode(), you
+ * will not need to lock the display surface before accessing it.
 *
 * No operating system or library calls should be made between lock/unlock
 * pairs, as critical system locks may be held during this time.
@@ -707,6 +691,7 @@ void GAL_MoveCursor (GAL_Surface* surface, int x, int y);
 */
 int GAL_LockSurface (GAL_Surface *surface);
 void GAL_UnlockSurface (GAL_Surface *surface);
+#endif

 /*
 * Set the color key (transparent pixel) in a blittable surface.
@@ -750,10 +735,10 @@ GAL_bool GAL_IntersectRect (const GAL_Rect *A, const GAL_Rect *B,
    Bmin = B->x;
    Bmax = Bmin + B->w;
    if (Bmin > Amin)
-        Amin = Bmin;
+            Amin = Bmin;
    intersection->x = Amin;
    if (Bmax < Amax)
-        Amax = Bmax;
+            Amax = Bmax;
    intersection->w = Amax - Amin > 0 ? Amax - Amin : 0;

    /* Vertical intersection */
@@ -762,10 +747,10 @@ GAL_bool GAL_IntersectRect (const GAL_Rect *A, const GAL_Rect *B,
    Bmin = B->y;
    Bmax = Bmin + B->h;
    if (Bmin > Amin)
-        Amin = Bmin;
+            Amin = Bmin;
    intersection->y = Amin;
    if (Bmax < Amax)
-        Amax = Bmax;
+            Amax = Bmax;
    intersection->h = Amax - Amin > 0 ? Amax - Amin : 0;

    return (intersection->w && intersection->h);
@@ -1082,8 +1067,8 @@ GAL_Surface* __drm_create_surface_from_name (GHANDLE video,
        uint32_t name, uint32_t drm_format, uint32_t pixels_off,
        uint32_t width, uint32_t height, uint32_t pitch);

-GAL_Surface* __drm_create_surface_from_handle (GHANDLE video, uint32_t handle,
-        size_t size, uint32_t drm_format, uint32_t pixels_off,
+GAL_Surface* __drm_create_surface_from_handle (GHANDLE video,
+        uint32_t handle, size_t size, uint32_t drm_format, uint32_t pixels_off,
        uint32_t width, uint32_t height, uint32_t pitch);

 GAL_Surface* __drm_create_surface_from_prime_fd (GHANDLE video,
@@ -73,8 +73,6 @@

 #if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
 /* union semun is defined by including <sys/sem.h> */
-#elif defined(__DARWIN__)
-/* union semun is defined by including <sys/sem.h> */
 #else
 /* according to X/OPEN we have to define it ourselves */
 union semun {
@@ -138,14 +138,6 @@ int __mg_save_png (MG_RWops* fp, MYBITMAP* bmp, RGB* pal);
 BOOL __mg_check_png (MG_RWops* fp);
 #endif

-#ifdef _MGIMAGE_WEBP
-void* __mg_init_webp (MG_RWops* fp, MYBITMAP *png, RGB *pal);
-int __mg_load_webp (MG_RWops* fp, void* init_info, MYBITMAP *png, CB_ONE_SCANLINE cb, void* context);
-void __mg_cleanup_webp (void* init_info);
-int __mg_save_webp (MG_RWops* fp, MYBITMAP* bmp, RGB* pal);
-BOOL __mg_check_webp (MG_RWops* fp);
-#endif
-
 int __mg_bmp_compute_pitch (int bpp, Uint32 width, Uint32 *pitch, BOOL does_round);

 #define fp_getc(fp)     MGUI_RWgetc(fp)
@@ -132,13 +132,6 @@ void __mg_client_del (int cli);

 void __mg_release_global_res (int cli);

-/* Since 5.2.0 */
-int __mg_nssurf_map_new(void);
-void __mg_nssurf_map_delete(void);
-int __mg_nssurf_map_operate_srv(const OPERATENSSURFINFO* req_info,
-        int cli, int fd);
-int __mg_get_shared_surface_srv(const char *itn_name, SHAREDSURFINFO *info);
-
 void __mg_remove_client (int cli, int clifd);

 int __mg_handle_request (int clifd, int req_id, int cli);
@@ -157,7 +150,6 @@ int __mg_remove_all_znodes_of_client (int cli);

 int __mg_handle_normal_mouse_move (const ZORDERINFO* zi, int x, int y);
 int __mg_get_znode_at_point (const ZORDERINFO* zi, int x, int y, HWND* hwnd);
-ZORDERNODE *__mg_find_znode_by_client_hwnd (int cli, HWND hwnd);

 int __mg_do_reghook_operation (int cli, const REGHOOKINFO* info);
 int __mg_handle_mouse_hook (int message, WPARAM wParam, LPARAM lParam);
@@ -112,7 +112,7 @@ typedef struct tagG_RES {

    int nr_layers;
    int semid_layer;
-#if 0 && defined(_MGSCHEMA_COMPOSITING) // deprecated since 5.2.0
+#ifdef _MGSCHEMA_COMPOSITING
    int semid_shared_surf;  /* the id of semaphore set for shared surfaces */
 #endif

@@ -208,7 +208,7 @@ typedef G_RES* PG_RES;
 #define SHAREDRES_NR_LAYSERS    (((PG_RES)mgSharedRes)->nr_layers)
 #define SHAREDRES_SEMID_LAYER   (((PG_RES)mgSharedRes)->semid_layer)

-#if 0 && defined(_MGSCHEMA_COMPOSITING) // Deprecated since 5.2.0
+#ifdef _MGSCHEMA_COMPOSITING
 # define SHAREDRES_SEMID_SHARED_SURF (((PG_RES)mgSharedRes)->semid_shared_surf)
 #endif

@@ -74,7 +74,7 @@ typedef struct _MSGQUEUE MSGQUEUE;
 extern "C" {
 #endif  /* __cplusplus */

-DWORD __mg_update_tick_count (MSGQUEUE* msg_queue);
+void __mg_update_tick_count (void* data);
 int  __mg_check_expired_timers (MSGQUEUE* msg_queue, DWORD inter);
 void __mg_remove_timers_by_msg_queue (MSGQUEUE* msg_queue);
 void __mg_remove_timer (MSGQUEUE* msg_queue, int slot);
@@ -141,17 +141,11 @@ typedef struct _ZORDERINFO {
    /* The size of usage bitmap for mask rect. */
    int             size_maskrect_usage_bmp;

-/* use read/write lock for Unix-like OS */
-#ifndef __NOUNIX__
-#define __ZI_USE_RWLOCK 1
-#endif
-
 #ifdef _MGRM_THREADS
-# ifdef __ZI_USE_RWLOCK
+# ifndef __NOUNIX__
    pthread_rwlock_t rwlock;
-    pthread_t        rwlock_owner;
 # else
-    pthread_mutex_t mutex;
+    pthread_mutex_t  rwlock;
 # endif
 #elif defined(_MGRM_PROCESSES)
    int             zi_semid;
@@ -1,6 +1,5 @@
 # also for makefile.ng and makefile.msvc
 AM_CPPFLAGS = -I$(abs_top_srcdir)/src/include -I$(abs_top_srcdir)/include
-AM_CFLAGS = -Wno-zero-length-bounds

 noinst_LTLIBRARIES = libkernel.la

@@ -59,13 +59,13 @@
 #include "common.h"
 #include "minigui.h"
 #include "gdi.h"
-#include "window.h"
 #include "constants.h"
+#include "blockheap.h"
 #include "misc.h"

 BOOL InitBlockDataHeap (PBLOCKHEAP heap, size_t sz_block, size_t sz_heap)
 {
-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_init (&heap->lock, NULL);
 #endif

@@ -99,7 +99,7 @@ void* BlockDataAlloc (PBLOCKHEAP heap)
    int free_slot;
    unsigned char* block_data = NULL;

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_lock (&heap->lock);
 #endif

@@ -118,7 +118,7 @@ void* BlockDataAlloc (PBLOCKHEAP heap)

 ret:

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_unlock (&heap->lock);
 #endif
    return block_data;
@@ -128,7 +128,7 @@ void BlockDataFree (PBLOCKHEAP heap, void* data)
 {
    unsigned char* block_data = data;

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_lock (&heap->lock);
 #endif

@@ -146,7 +146,7 @@ void BlockDataFree (PBLOCKHEAP heap, void* data)
                heap, slot);
    }

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_unlock (&heap->lock);
 #endif
 }
@@ -193,7 +193,7 @@ void DestroyBlockDataHeap (PBLOCKHEAP heap)
    free (heap->usage_bmp);
    heap->usage_bmp = NULL;

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_destroy (&heap->lock);
 #endif
 }
@@ -228,7 +228,6 @@ static void composite_wallpaper_rect (CompositorCtxt* ctxt,
        }
    }
    else {
-        SelectClipRect (HDC_SCREEN_SYS, dirty_rc);
        SetBrushColor (HDC_SCREEN_SYS,
            GetWindowElementPixelEx (HWND_DESKTOP, HDC_SCREEN_SYS,
                WE_BGC_DESKTOP));
@@ -679,19 +678,6 @@ static BOOL merge_dirty_ppp (CompositorCtxt* ctxt, MG_Layer* layer, int zidx)
    return rc;
 }

-#if 0
-static void dump_dirty_region(CompositorCtxt* ctxt, const char *prefix, int zidx)
-{
-    CLIPRGN* rgn = &ctxt->dirty_rgn;
-    _WRN_PRINTF("%s (%d): dirty region on screen: (%d, %d) %d x %d; "
-            "highest dirty win: %d; lowest dirty win: %d\n",
-            prefix, zidx,
-            rgn->rcBound.left, rgn->rcBound.top,
-            RECTW (rgn->rcBound), RECTH (rgn->rcBound),
-            ctxt->highest_dirty_win, ctxt->lowest_dirty_win);
-}
-#endif
-
 static BOOL merge_dirty_win (CompositorCtxt* ctxt, MG_Layer* layer, int zidx)
 {
    BOOL rc = FALSE;
@@ -735,13 +721,9 @@ static BOOL merge_dirty_wpp (CompositorCtxt* ctxt, MG_Layer* layer)
 static BOOL refresh_dirty_region (CompositorCtxt* ctxt, MG_Layer* layer)
 {
    /* the fallback compositor only manages znodes on the topmost layer. */
-    if (layer != mgTopmostLayer)
+    if (layer != mgTopmostLayer || IsEmptyClipRgn (&ctxt->dirty_rgn))
        return FALSE;

-    if (IsEmptyClipRgn (&ctxt->dirty_rgn)) {
-        return FALSE;
-    }
-
    if (ctxt->highest_dirty_ppp >= 0) {
        composite_ppp_znodes (ctxt);
    }
@@ -15,7 +15,7 @@
 *   and Graphics User Interface (GUI) support system for embedded systems
 *   and smart IoT devices.
 *
- *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2021, Beijing FMSoft Technologies Co., Ltd.
 *   Copyright (C) 1998~2002, WEI Yongming
 *
 *   This program is free software: you can redistribute it and/or modify
@@ -56,6 +56,7 @@
 #include <string.h>
 #include <errno.h>

+#define _DEBUG
 #include "common.h"

 #if defined(_MGRM_PROCESSES) && defined(_MGSCHEMA_COMPOSITING)
@@ -68,7 +69,6 @@
 #include "constants.h"
 #include "zorder.h"
 #include "dc.h"
-#include "server.h"

 #define MAX_NR_COMPOSITORS      8
 #define LEN_COMPOSITOR_NAME     15
@@ -133,51 +133,31 @@ static void lock_znode_surface (PDC pdc, ZORDERNODE* node)
 {
    if (node->lock_count == 0) {
        if (pdc->surface->shared_header) {
-            __mg_lock_file_for_read(pdc->surface->fd);
+            LOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);
        }

        node->dirty_age = pdc->surface->dirty_info->dirty_age;
        node->nr_dirty_rcs = pdc->surface->dirty_info->nr_dirty_rcs;
        node->dirty_rcs = pdc->surface->dirty_info->dirty_rcs;
+
    }

    node->lock_count++;
 }

-static BOOL unlock_znode_surface (PDC pdc, ZORDERNODE* node)
+static void unlock_znode_surface (PDC pdc, ZORDERNODE* node)
 {
-    BOOL need_reset = FALSE;
    if (node->lock_count > 0) {
        node->lock_count--;
        if (node->lock_count == 0) {
-            if (node->changes != pdc->surface->dirty_info->dirty_age) {
-                node->changes = pdc->surface->dirty_info->dirty_age;
-                need_reset = TRUE;
-            }
-
-            if (pdc->surface->shared_header) {
-                __mg_unlock_file_for_read(pdc->surface->fd);
-            }
+            if (pdc->surface->shared_header)
+                UNLOCK_SURFACE_SEM (pdc->surface->shared_header->sem_num);

            node->dirty_age = 0;
            node->nr_dirty_rcs = 0;
            node->dirty_rcs = NULL;
        }
    }
-
-    return need_reset;
-}
-
-static void reset_znode_surface_dirty (PDC pdc, ZORDERNODE* node, int slot)
-{
-    if (node->cli == 0 || slot == 0) {
-        pdc->surface->dirty_info->nr_dirty_rcs = 0;
-    }
-    else if (node->hwnd) {
-        MSG msg = { HWND_NULL, MSG_WINCOMPOSITED,
-            slot, (LPARAM)node->hwnd, (DWORD)node->changes };
-        __mg_send2client(&msg, mgClients + node->cli);
-    }
 }

 #if 0   /* not optimized */
@@ -342,8 +322,10 @@ static void composite_layer (MG_Layer* layer, CompositorCtxt* ctxt,
        nodes = GET_MENUNODE(zi);
        for (i = 0; i < zi->nr_popupmenus; i++) {
            pdc = dc_HDC2PDC (nodes[i].mem_dc);
-            if (unlock_znode_surface (pdc, nodes + i))
-                reset_znode_surface_dirty (pdc, nodes + i, i);
+
+            nodes[i].changes = pdc->surface->dirty_info->dirty_age;
+            pdc->surface->dirty_info->nr_dirty_rcs = 0;
+            unlock_znode_surface (pdc, nodes + i);
        }
    }

@@ -353,8 +335,9 @@ static void composite_layer (MG_Layer* layer, CompositorCtxt* ctxt,
    while ((next = __kernel_get_next_znode (zi, next)) > 0) {
        if (nodes [next].flags & ZOF_VISIBLE) {
            pdc = dc_HDC2PDC (nodes[next].mem_dc);
-            if (unlock_znode_surface (pdc, nodes + next))
-                reset_znode_surface_dirty (pdc, nodes + next, next);
+            nodes[next].changes = pdc->surface->dirty_info->dirty_age;
+            pdc->surface->dirty_info->nr_dirty_rcs = 0;
+            unlock_znode_surface (pdc, nodes + next);
        }
    }

@@ -363,8 +346,9 @@ static void composite_layer (MG_Layer* layer, CompositorCtxt* ctxt,
    if (layer == mgTopmostLayer) {
        pdc = dc_HDC2PDC (HDC_SCREEN);
        if (pdc->surface->w > 0 && pdc->surface->h > 0) {
-            if (unlock_znode_surface (pdc, nodes))
-                reset_znode_surface_dirty (pdc, nodes, 0);
+            nodes[0].changes = pdc->surface->dirty_info->dirty_age;
+            pdc->surface->dirty_info->nr_dirty_rcs = 0;
+            unlock_znode_surface (pdc, nodes);
        }
    }
 }
@@ -505,7 +489,7 @@ const CompositorOps* GUIAPI ServerGetCompositorOps (const char* name)
        return NULL;

    for (i = 0; i < MAX_NR_COMPOSITORS; i++) {
-        if (strcmp (compositors [i].name, name) == 0) {
+        if (compositors [i].name && strcmp (compositors [i].name, name) == 0) {
            return compositors [i].ops;
        }
    }
@@ -1081,12 +1081,6 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
    const RECT* prc;

    prc = &cur_pdc->rc_output;
-
-    /* Since 5.0.13 */
-    if (!fShow) {
-        GAL_LockSurface(cur_pdc->surface);
-    }
-
    if (cur_pdc->surface != __gal_screen) {
        if (fShow) {
            GAL_UpdateRect (cur_pdc->surface,
@@ -1096,7 +1090,7 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
    }
    else {
        if (!mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer)) {
-            goto done;
+            return;
        }

        if (!fShow) {
@@ -1115,12 +1109,6 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
            UNLOCK_CURSOR_SEM ();
        }
    }
-
-done:
-    /* Since 5.0.13 */
-    if (fShow) {
-        GAL_UnlockSurface(cur_pdc->surface);
-    }
 }

 #else   /* defined _MGSCHEMA_SHAREDFB */
@@ -1136,12 +1124,6 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
    }

    prc = &cur_pdc->rc_output;
-
-    /* Since 5.0.13 */
-    if (!fShow) {
-        GAL_LockSurface(cur_pdc->surface);
-    }
-
    if (cur_pdc->surface == __gal_screen) {
        // Under compositing schema, we never call SyncUpdate in
        // kernel_ShowCursorForGDI for __gal_screen.
@@ -1168,11 +1150,6 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
        // For surface other than screen, we call SyncUpdate.
        GAL_SyncUpdate (cur_pdc->surface);
    }
-
-    /* Since 5.0.13 */
-    if (fShow) {
-        GAL_UnlockSurface(cur_pdc->surface);
-    }
 }

 #endif  /* not defined _MGSCHEMA_SHAREDFB */
@@ -1251,25 +1228,26 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
    PDC cur_pdc = (PDC)pdc;
    const RECT* prc = NULL;

-    if (!mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer)) {
-        return;
-    }
-
    prc = &cur_pdc->rc_output;

-    /* Since 5.0.13 */
-    if (!fShow) {
-        GAL_LockSurface(cur_pdc->surface);
+    /* houhh20080827, if --disable-cursor, mginit can not update auto(qvfb). */
+#if 0
+    if (cur_pdc->surface == __gal_screen
+            && mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer))
+        return;
+
+    if (fShow)
+        GAL_UpdateRect (cur_pdc->surface,
+                        prc->left, prc->top, RECTWP(prc), RECTHP(prc));
+#else
+    if (!mgIsServer && (SHAREDRES_TOPMOST_LAYER != __mg_layer)) {
+        return;
    }

    if (fShow)
        GAL_UpdateRect (cur_pdc->surface,
                prc->left, prc->top, RECTWP(prc), RECTHP(prc));
-
-    /* Since 5.0.13 */
-    if (fShow) {
-        GAL_UnlockSurface(cur_pdc->surface);
-    }
+#endif
 }

 #endif /* _MGHAVE_CURSOR */
@@ -448,11 +448,6 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)

    prc = &cur_pdc->rc_output;

-    /* Since 5.0.13 */
-    if (!fShow) {
-        GAL_LockSurface(cur_pdc->surface);
-    }
-
    if (cur_pdc->surface != __gal_screen) {
        if (fShow) {
            GAL_UpdateRect (cur_pdc->surface,
@@ -477,7 +472,7 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
                                prc->left, prc->top, RECTWP(prc), RECTHP(prc));
                //GAL_SyncUpdate (cur_pdc->surface);
            }
-            goto done;
+            return;
        }

        if (fShow && nShowCount >= 0 && pCurCsr) {
@@ -493,12 +488,6 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)
            //GAL_SyncUpdate (cur_pdc->surface);
        }
    }
-
-done:
-    /* Since 5.0.13 */
-    if (fShow) {
-        GAL_UnlockSurface(cur_pdc->surface);
-    }
 }

 int GUIAPI ShowCursor (BOOL fShow)
@@ -527,16 +516,9 @@ void kernel_ShowCursorForGDI(BOOL fShow, void* pdc)

    prc = &cur_pdc->rc_output;

-    /* Since 5.0.13 */
-    if (!fShow) {
-        GAL_LockSurface(cur_pdc->surface);
-    }
-    else {
+    if (fShow)
        GAL_UpdateRect (cur_pdc->surface,
                        prc->left, prc->top, RECTWP(prc), RECTHP(prc));
-        /* Since 5.0.13 */
-        GAL_UnlockSurface(cur_pdc->surface);
-    }
 }

 #endif /* _MGHAVE_CURSOR */
@@ -472,15 +472,11 @@ void kernel_ShowCursorForGDI (BOOL fShow, void *pdc)

    prc = &cur_pdc->rc_output;

-    /* Since 5.0.13 */
-    if (!fShow) {
-        GAL_LockSurface(cur_pdc->surface);
-    }
-
    if (cur_pdc->surface != __gal_screen) {
        if (fShow) {
-            GAL_UpdateRect(cur_pdc->surface,
+            GAL_UpdateRect (cur_pdc->surface,
                            prc->left, prc->top, RECTWP(prc), RECTHP(prc));
+            // GAL_SyncUpdate (cur_pdc->surface);
        }
    }
    else {
@@ -504,7 +500,7 @@ void kernel_ShowCursorForGDI (BOOL fShow, void *pdc)
                pthread_mutex_unlock(&__mg_mouselock);
                // GAL_SyncUpdate (cur_pdc->surface);
            }
-            goto done;
+            return;
        }

        if (fShow && nShowCount >= 0 && pCurCsr) {
@@ -522,12 +518,6 @@ void kernel_ShowCursorForGDI (BOOL fShow, void *pdc)
            // GAL_SyncUpdate (cur_pdc->surface);
        }
    }
-
-done:
-    /* Since 5.0.13 */
-    if (fShow) {
-        GAL_UnlockSurface(cur_pdc->surface);
-    }
 }

 int GUIAPI ShowCursor(BOOL fShow)
@@ -568,17 +558,9 @@ void kernel_ShowCursorForGDI (BOOL fShow, void* pdc)

    prc = &cur_pdc->rc_output;

-    /* Since 5.0.13 */
-    if (!fShow) {
-        GAL_LockSurface(cur_pdc->surface);
-    }
-    else {
+    if (fShow)
        GAL_UpdateRect (cur_pdc->surface,
                        prc->left, prc->top, RECTWP(prc), RECTHP(prc));
-
-        /* Since 5.0.13 */
-        GAL_UnlockSurface(cur_pdc->surface);
-    }
 }

 #endif /* _MGHAVE_CURSOR */
@@ -232,7 +232,7 @@ static int dskAddNewMainWindow (PMAINWIN pWin)

    if (pWin->secondaryDC == HDC_INVALID) {
        /* remove the flag of WS_EX_AUTOSECONDARYDC */
-        pWin->dwExStyle &= ~WS_EX_AUTOSECONDARYDC;
+        pWin->dwExStyle = pWin->dwExStyle | WS_EX_AUTOSECONDARYDC;
        pWin->secondaryDC = 0;

    }
@@ -1403,7 +1403,7 @@ static LRESULT WindowMessageHandler(UINT message, PMAINWIN pWin, LPARAM lParam)
        else {
            from = 0;
        }
-
+     
        lock_zi_for_read (zi);

        from = __kernel_get_next_znode (zi, from);
@@ -1429,8 +1429,6 @@ static LRESULT WindowMessageHandler(UINT message, PMAINWIN pWin, LPARAM lParam)
    /* Since 5.0.0 */
    case MSG_SETAUTOREPEAT:
        sg_msgAutoRepeat = *(const MSG*)lParam;
-        /* start auto-repeat after 300ms */
-        sg_msgAutoRepeat.time = __mg_tick_counter + (__mg_timeout_usec/10000);
        break;

    /* Since 5.0.0 */
@@ -1745,6 +1743,11 @@ static int dskOnRemoveCtrlInstance (PCONTROL pParent, PCONTROL pCtrl)
        FreeZOrderNode (0, pCtrl->idx_znode, NULL);
    }

+    if (fFound) {
+        pCtrl->pcci->nUseCount --;
+        return 0;
+    }
+
    if ((HWND)pCtrl == __mg_captured_wnd) {
        /* force release the capture */
        __mg_captured_wnd = 0;
@@ -1759,11 +1762,6 @@ static int dskOnRemoveCtrlInstance (PCONTROL pParent, PCONTROL pCtrl)
        sg_msgAutoRepeat.hwnd = 0;
    }

-    if (fFound) {
-        pCtrl->pcci->nUseCount--;
-        return 0;
-    }
-
    return -1;
 }

@@ -1823,7 +1821,7 @@ static void dskRefreshAllWindow (const RECT* invrc)
        info.is_empty_invrc = TRUE;

 #ifdef _MGHAVE_MENU
-    dskForceCloseMenu ();
+            dskForceCloseMenu ();
 #endif

    SendMessage (HWND_DESKTOP, MSG_ERASEDESKTOP, 0,
@@ -1875,12 +1873,9 @@ static void dskOnTimeout (void)
    static DWORD uCounter = 0;
    static DWORD blink_counter = 0;

-    if (sg_msgAutoRepeat.hwnd != 0 &&
-            __mg_tick_counter >= sg_msgAutoRepeat.time) {
+    if (sg_msgAutoRepeat.hwnd != 0) {
        PostMessage (sg_msgAutoRepeat.hwnd, sg_msgAutoRepeat.message,
                sg_msgAutoRepeat.wParam, sg_msgAutoRepeat.lParam);
-        /* next auto-repeat msg after 50ms */
-        sg_msgAutoRepeat.time = __mg_tick_counter + (__mg_repeat_usec/10000);
    }

    if (__mg_tick_counter < (blink_counter + 10))
@@ -74,7 +74,6 @@
 #include "dc.h"
 #include "misc.h"
 #include "devfont.h"
-#include "event.h"

 #ifndef WIN32
 #include <sys/termios.h>
@@ -103,6 +102,14 @@ BOOL mg_InitDesktop (void)
    int ret;
    RECT rcScr = GetScreenRect();

+#if 0   /* move to init-lite.c */
+    /* Since 5.0.0: allocate message queue for desktop thread */
+    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread ()) ) {
+        _WRN_PRINTF ("failed to allocate message queue\n");
+        return FALSE;
+    }
+#endif  /* moved code */
+
    /*
     * Init ZOrderInfo here.
     */
@@ -146,7 +153,7 @@ BOOL mg_InitDesktop (void)
 void mg_TerminateDesktop (void)
 {
    if (__mg_dsk_msg_queue) {
-        mg_FreeMsgQueueForThisThread (TRUE);
+        mg_FreeMsgQueueForThisThread ();
        __mg_dsk_msg_queue = NULL;
    }

@@ -55,7 +55,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
-#include <time.h>

 #include "common.h"

@@ -73,7 +72,6 @@
 #include "dc.h"
 #include "misc.h"
 #include "devfont.h"
-#include "event.h"

 /******************************* global data *********************************/
 /* pointer to desktop message queue */
@@ -142,47 +140,19 @@ BOOL mg_InitDesktop (void)

 #include "debug.h"

-/* According to a bug report, we use sem_timedwait() instead of
-   calling std_idle_handler for desktop thread.
-   Otherwise, the desktop might not handle the request from other GUI threads
-   as soon as possible. */
-static BOOL idle_handler_for_desktop_thread (MSGQUEUE *msg_queue, BOOL wait)
-{
-    int retv, n = 0;
-
-    __mg_update_tick_count (msg_queue);
-
-    if (wait) {
-        struct timespec ts;
-        if (clock_gettime (CLOCK_REALTIME, &ts) != -1) {
-            ts.tv_nsec += 10 * 1000 * 1000L; // 10ms
-            if (ts.tv_nsec >= 1000 * 1000 * 1000L) {
-                ts.tv_sec += 1;
-                ts.tv_nsec -= 1000 * 1000 * 1000L;
-            }
-
-            if (sem_timedwait (&msg_queue->wait, &ts) == 0)
-                return TRUE;
-        }
-    }
-
-    return n > 0;
-}
-
 void* __kernel_desktop_main (void* data)
 {
    MSG Msg;

    /* init message queue of desktop thread */
-    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread (TRUE)) ) {
+    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread ()) ) {
        _ERR_PRINTF ("failed to allocate message queue\n");
        sem_post ((sem_t*)data);
        return NULL;
    }

-    /* For bug reported in Issue #116, under threads mode, the idle handler
-       for the desktop thread should call __mg_update_tick_count () */
-    __mg_dsk_msg_queue->OnIdle = idle_handler_for_desktop_thread;
+    /* for threads mode, the idle handler for desktop thread is NULL */
+    __mg_dsk_msg_queue->OnIdle = NULL;

    /* init desktop window */
    init_desktop_win ();
@@ -221,7 +191,7 @@ void* __kernel_desktop_main (void* data)
 #endif
    }

-    mg_FreeMsgQueueForThisThread (TRUE);
+    mg_FreeMsgQueueForThisThread ();
    __mg_dsk_msg_queue = NULL;
    return NULL;
 }
@@ -15,7 +15,7 @@
 *   and Graphics User Interface (GUI) support system for embedded systems
 *   and smart IoT devices.
 *
- *   Copyright (C) 2002~2022, Beijing FMSoft Technologies Co., Ltd.
+ *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
 *   Copyright (C) 1998~2002, WEI Yongming
 *
 *   This program is free software: you can redistribute it and/or modify
@@ -597,63 +597,55 @@ static void reset_window (PMAINWIN pWin, RECT* rcWin)
 #endif

 #ifdef _MGRM_THREADS
-# ifdef __ZI_USE_RWLOCK
-static inline void lock_zi_for_change (ZORDERINFO* zi)
+#ifndef __NOUNIX__
+/*for unix system, using read/write lock*/
+static inline void lock_zi_for_change (const ZORDERINFO* zi)
 {
-    pthread_rwlock_wrlock(&zi->rwlock);
-    zi->rwlock_owner = pthread_self();
+    pthread_rwlock_wrlock(&((ZORDERINFO*)zi)->rwlock);
 }

-static inline void unlock_zi_for_change (ZORDERINFO* zi)
+static inline void unlock_zi_for_change (const ZORDERINFO* zi)
 {
-    pthread_rwlock_unlock(&zi->rwlock);
-    zi->rwlock_owner = 0;
+    pthread_rwlock_unlock(&((ZORDERINFO*)zi)->rwlock);
 }

-static inline void lock_zi_for_read (ZORDERINFO* zi)
+static inline void lock_zi_for_read (const ZORDERINFO* zi)
 {
-    if (zi->rwlock_owner == pthread_self()) {
-        return;
-    }
-
-    pthread_rwlock_rdlock(&zi->rwlock);
+    pthread_rwlock_rdlock(&((ZORDERINFO*)zi)->rwlock);
 }

-static inline void unlock_zi_for_read (ZORDERINFO* zi)
+static inline void unlock_zi_for_read (const ZORDERINFO* zi)
 {
-    if (zi->rwlock_owner == pthread_self()) {
-        return;
-    }
-
-    pthread_rwlock_unlock(&zi->rwlock);
+    pthread_rwlock_unlock(&((ZORDERINFO*)zi)->rwlock);
 }
-# else /* __ZI_USE_RWLOCK */
-static inline void lock_zi_for_change (ZORDERINFO* zi)
+#else /* __NOUNIX__ */
+/*for non-unix system, using mutex*/
+static inline void lock_zi_for_change (const ZORDERINFO* zi)
 {
-    pthread_mutex_lock(&zi->mutex);
+    pthread_mutex_lock(&((ZORDERINFO*)zi)->rwlock);
 }

-static inline void unlock_zi_for_change (ZORDERINFO* zi)
+static inline void unlock_zi_for_change (const ZORDERINFO* zi)
 {
-    pthread_mutex_unlock(&zi->mutex);
+    pthread_mutex_unlock(&((ZORDERINFO*)zi)->rwlock);
 }

-static inline void lock_zi_for_read (ZORDERINFO* zi)
+static inline void lock_zi_for_read (const ZORDERINFO* zi)
 {
-    pthread_mutex_lock(&zi->mutex);
+    pthread_mutex_lock(&((ZORDERINFO*)zi)->rwlock);
 }

-static inline void unlock_zi_for_read (ZORDERINFO* zi)
+static inline void unlock_zi_for_read (const ZORDERINFO* zi)
 {
-    pthread_mutex_unlock(&zi->mutex);
+    pthread_mutex_unlock(&((ZORDERINFO*)zi)->rwlock);
 }
-# endif /* notdef __ZI_USE_RWLOCK */
+#endif /* __NOUNIX__ */

 #elif defined(_MGRM_STANDALONE)
-static inline void lock_zi_for_change (ZORDERINFO* zi) { }
-static inline void unlock_zi_for_change (ZORDERINFO* zi) { }
-static inline void lock_zi_for_read (ZORDERINFO* zi) { }
-static inline void unlock_zi_for_read (ZORDERINFO* zi) { }
+static inline void lock_zi_for_change (const ZORDERINFO* zi) { }
+static inline void unlock_zi_for_change (const ZORDERINFO* zi) { }
+static inline void lock_zi_for_read (const ZORDERINFO* zi) { }
+static inline void unlock_zi_for_read (const ZORDERINFO* zi) { }
 #else /* for procs */
 /* NULL. see desktop-procs.c */
 #endif /* _MGRM_THREADS */
@@ -1603,10 +1595,8 @@ static int srvStartTrackPopupMenu (int cli, const RECT* rc, HWND ptmi,
            surf->refcount++;
        }
        else if (fd >= 0) {
-            surf = GAL_AttachSharedRGBSurface (NULL, fd,
-                    surf_size, surf_flags, TRUE);
-            /* Since 5.2.0: keep fd available.
-            close (fd); */
+            surf = GAL_AttachSharedRGBSurface (fd, surf_size, surf_flags, TRUE);
+            close (fd);
        }
        else {
            _WRN_PRINTF("not server but fd for shared surface is invalid\n");
@@ -1614,7 +1604,7 @@ static int srvStartTrackPopupMenu (int cli, const RECT* rc, HWND ptmi,
        }

        if (surf) {
-            memdc = __mg_create_memdc_for_surface (surf);
+            memdc = CreateMemDCFromSurface (surf);
            if (memdc == HDC_INVALID) {
                GAL_FreeSurface (surf);
                _WRN_PRINTF("failed to create memory dc for znode\n");
@@ -1648,14 +1638,11 @@ static int srvStartTrackPopupMenu (int cli, const RECT* rc, HWND ptmi,
    menu_nodes [zi->nr_popupmenus].flags = ZOF_TYPE_POPUPMENU;
    menu_nodes [zi->nr_popupmenus].rc = *rc;
    menu_nodes [zi->nr_popupmenus].hwnd = ptmi;
-    menu_nodes [zi->nr_popupmenus].cli = 0;
 #ifdef _MGSCHEMA_COMPOSITING
    menu_nodes [zi->nr_popupmenus].changes = 0;
    menu_nodes [zi->nr_popupmenus].ct = CT_OPAQUE;
    menu_nodes [zi->nr_popupmenus].ct_arg = 0;
    menu_nodes [zi->nr_popupmenus].mem_dc = memdc;
-    menu_nodes [zi->nr_popupmenus].dirty_age = 0;
-    menu_nodes [zi->nr_popupmenus].nr_dirty_rcs = 0;
    menu_nodes [zi->nr_popupmenus].dirty_rcs = NULL;
 #endif
    menu_nodes [zi->nr_popupmenus].priv_data = NULL;
@@ -2361,8 +2348,6 @@ static int AllocZOrderNodeEx (ZORDERINFO* zi, int cli, HWND hwnd, HWND main_win,
    nodes [free_slot].ct = validate_compositing_type (flags, ct);
    nodes [free_slot].ct_arg = ct_arg;
    nodes [free_slot].mem_dc = mem_dc;
-    nodes [free_slot].dirty_age = 0;
-    nodes [free_slot].nr_dirty_rcs = 0;
    nodes [free_slot].dirty_rcs = NULL;
 #else
    nodes [free_slot].age = 1;
@@ -3656,9 +3641,6 @@ static int dskMoveWindow (int cli, int idx_znode, HDC memdc, const RECT* rcWin)

        do_for_all_znodes (&rcOld, zi, _cb_update_znode, ZT_ALL);

-        /* unlock zi for change ... */
-        unlock_zi_for_change (zi);
-
        if (nodes [0].flags & ZOF_IF_REFERENCE) {
            SendMessage (HWND_DESKTOP,
                            MSG_ERASEDESKTOP, 0, (LPARAM)&rcOld);
@@ -3698,6 +3680,9 @@ static int dskMoveWindow (int cli, int idx_znode, HDC memdc, const RECT* rcWin)

        update_client_window_rgn (nodes [idx_znode].cli,
                nodes [idx_znode].hwnd);
+
+        /* unlock zi for change ... */
+        unlock_zi_for_change (zi);
    }
    else {
        lock_zi_for_change (zi);
@@ -4514,9 +4499,7 @@ int __mg_join_all_message_threads (void)

    list_for_each (l, &msg_queue_list) {
        MSGQUEUE *msg_queue = (MSGQUEUE*)l;
-#ifndef NDEBUG
        dump_message_queue (msg_queue, __func__);
-#endif
        pthread_cancel (msg_queue->th);
    }

@@ -89,9 +89,8 @@

 struct timeval __mg_event_timeout;

-DWORD __mg_timeout_usec;
-DWORD __mg_repeat_usec;
-
+static DWORD timeoutusec;
+static DWORD repeatusec;
 static DWORD dblclicktime;

 #ifndef _MGRM_THREADS
@@ -122,8 +121,8 @@ static void GetTimeout (void)
    char szValue [11];
    int mytimeoutusec, myrepeatusec;

-    __mg_timeout_usec = DEF_USEC_TIMEOUT;
-    __mg_repeat_usec = DEF_REPEAT_TIME;
+    timeoutusec = DEF_USEC_TIMEOUT;
+    repeatusec = DEF_REPEAT_TIME;

    if (GetMgEtcValue (EVENTPARA, EVENTPARA_REPEATUSEC, szValue, 10) < 0)
        return;
@@ -134,8 +133,8 @@ static void GetTimeout (void)
    mytimeoutusec = atoi(szValue);

    if (myrepeatusec >= 0 && mytimeoutusec > 0) {
-        __mg_timeout_usec = mytimeoutusec;
-        __mg_repeat_usec = myrepeatusec;
+        timeoutusec = mytimeoutusec;
+        repeatusec = myrepeatusec;
    }
 }

@@ -209,7 +208,7 @@ static void ResetKeyEvent(void)
    IAL_SetLeds (slock | (numlock << 1) | (capslock << 2));

    __mg_event_timeout.tv_sec = 0;
-    __mg_event_timeout.tv_usec = __mg_timeout_usec;
+    __mg_event_timeout.tv_usec = timeoutusec;

 #ifndef _MGRM_THREADS
 #ifdef _MGRM_PROCESSES
@@ -217,8 +216,8 @@ static void ResetKeyEvent(void)
    SHAREDRES_SHIFTSTATUS = status;
 #endif

-    timeout_threshold = __mg_timeout_usec / 10000;
-    repeat_threshold = __mg_repeat_usec / 10000;
+    timeout_threshold = timeoutusec / 10000;
+    repeat_threshold = repeatusec / 10000;
    timeout_count = timeout_threshold;
 #endif
 }
@@ -632,7 +631,7 @@ BOOL kernel_GetLWEvent (int event, PLWEVENT lwe)

            // set repeat time
            __mg_event_timeout.tv_sec = 0;
-            __mg_event_timeout.tv_usec = __mg_repeat_usec;
+            __mg_event_timeout.tv_usec = repeatusec;

            // repeat last event
            if (old_lwe.type == LWETYPE_KEY
@@ -653,7 +652,7 @@ BOOL kernel_GetLWEvent (int event, PLWEVENT lwe)
                        old_lwe.data.me.event == ME_MIDDLEDOWN))) {
                // reset delay time
                __mg_event_timeout.tv_sec = 0;
-                __mg_event_timeout.tv_usec = __mg_timeout_usec;
+                __mg_event_timeout.tv_usec = timeoutusec;
            }

            lwe->type = LWETYPE_TIMEOUT;
@@ -881,7 +880,7 @@ BOOL kernel_GetLWEvent (int event, PLWEVENT lwe)
        memcpy (oldkeystate, keystate, nr_keys);
        memcpy (&old_lwe, lwe, sizeof (LWEVENT));
        __mg_event_timeout.tv_sec = 0;
-        __mg_event_timeout.tv_usec = __mg_timeout_usec;
+        __mg_event_timeout.tv_usec = timeoutusec;
        return 1;
    }

@@ -900,7 +899,7 @@ mouseret:
    me->status = status;
    memcpy (&old_lwe, lwe, sizeof (LWEVENT));
    __mg_event_timeout.tv_sec = 0;
-    __mg_event_timeout.tv_usec = __mg_timeout_usec;
+    __mg_event_timeout.tv_usec = timeoutusec;
    return 1;
 }
 #endif
@@ -66,7 +66,7 @@ static struct FIXSTR {
    BYTE bitmap[LEN_BITMAP];
    int offset[NR_HEAP];
    char* heap[NR_HEAP + 1];
-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_t lock;
 #endif
 } FixStrHeap;
@@ -98,7 +98,7 @@ BOOL mg_InitFixStr (void)
        offset += 1<<i;
    }

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_init (&FixStrHeap.lock, NULL);
 #endif
    return TRUE;
@@ -106,7 +106,7 @@ BOOL mg_InitFixStr (void)

 void mg_TerminateFixStr (void)
 {
-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_destroy (&FixStrHeap.lock);
 #endif
    free (FixStrHeap.heap[0]);
@@ -154,7 +154,7 @@ char* GUIAPI FixStrAlloc (int len)
    // ..
    // if i == 0; then bufflen = 512

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_lock (&FixStrHeap.lock);
 #endif

@@ -166,7 +166,7 @@ char* GUIAPI FixStrAlloc (int len)
        for(j = 0; j < 8; j++) {
            if (*bitmap & (0x80 >> j)) {
                *bitmap &= (~(0x80 >> j));
-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
                pthread_mutex_unlock (&FixStrHeap.lock);
 #endif
 #if 0
@@ -181,7 +181,7 @@ char* GUIAPI FixStrAlloc (int len)
        bitmap++;
    }

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_unlock (&FixStrHeap.lock);
 #endif
    return (char*)malloc (len + 1);
@@ -216,7 +216,7 @@ void GUIAPI FreeFixStr (char* str)
    // if i == 0; then bufflen = 512
    bufflen = 1 << (NR_HEAP + 1 - i);

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_lock (&FixStrHeap.lock);
 #endif
    heap = FixStrHeap.heap[i];
@@ -236,7 +236,7 @@ void GUIAPI FreeFixStr (char* str)
    bitmap = bitmap + (stroff>>3);
    *bitmap |= (0x80 >> (stroff%8));

-#ifdef _MGHAVE_VIRTUAL_WINDOW
+#ifdef _MGRM_THREADS
    pthread_mutex_unlock (&FixStrHeap.lock);
 #endif
 }
@@ -386,7 +386,7 @@ int InitGUI (int argc, const char* agr[])

    /* Since 5.0.0
       allocate message queue for desktop thread before starting client. */
-    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread (TRUE)) ) {
+    if (!(__mg_dsk_msg_queue = mg_AllocMsgQueueForThisThread ()) ) {
        err_message (step, "Failed to allocate message queue!");
        return step;
    }
@@ -391,6 +391,14 @@ static BOOL InstallSEGVHandler (void)
 #include <locale.h>
 #endif

+static IDLEHANDLER std_idle_handler;
+
+static BOOL idle_handler_for_main_thread (MSGQUEUE *msg_queue, BOOL wait)
+{
+    __mg_update_tick_count (NULL);
+    return std_idle_handler (msg_queue, wait);
+}
+
 int GUIAPI InitGUI (int args, const char *agr[])
 {
    char engine [LEN_ENGINE_NAME + 1];
@@ -562,13 +570,6 @@ int GUIAPI InitGUI (int args, const char *agr[])

    _is_minigui_running = 1;

-    /* init timer for tick counter */
-    step++;
-    if (!mg_InitTimer()) {
-        _ERR_PRINTF ("KERNEL>InitGUI: failed to start time counter\n");
-        goto failure;
-    }
-
    step++;
    if (!SystemThreads()) {
        _ERR_PRINTF ("KERNEL>InitGUI: failed to init system threads!\n");
@@ -577,11 +578,23 @@ int GUIAPI InitGUI (int args, const char *agr[])

    /* init message queue of main GUI thread */
    step++;
-    if (!(msg_queue = mg_AllocMsgQueueForThisThread (TRUE))) {
+    if (!(msg_queue = mg_AllocMsgQueueForThisThread ())) {
        _ERR_PRINTF ("KERNEL>InitGUI: failed to allocate message queue!\n");
        goto failure;
    }

+    /* for threads mode, the idle handler for the main threads should
+       call __mg_update_tick_count () */
+    std_idle_handler = msg_queue->OnIdle;
+    msg_queue->OnIdle = idle_handler_for_main_thread;
+
+    /* init timer for tick counter */
+    step++;
+    if (!mg_InitTimer (FALSE)) {
+        _ERR_PRINTF ("KERNEL>InitGUI: failed to start time counter\n");
+        goto failure;
+    }
+
    SetKeyboardLayout ("default");

    SetCursor (GetSystemCursor (IDC_ARROW));
@@ -602,9 +615,7 @@ failure1:

 void GUIAPI TerminateGUI (int not_used)
 {
-    mg_TerminateTimer ();
-
-    mg_FreeMsgQueueForThisThread (TRUE);
+    mg_TerminateTimer (FALSE);

    /* Since 5.0.0 */
    SendNotifyMessage (HWND_DESKTOP, MSG_ENDSESSION, 0, 0);
@@ -644,6 +655,8 @@ void GUIAPI TerminateGUI (int not_used)
    miFreeArcCache ();
 #endif

+    mg_FreeMsgQueueForThisThread ();
+
    deleteThreadInfoKey ();

    mg_TerminateSliceAllocator();
@@ -60,6 +60,7 @@
 #include "gdi.h"
 #include "window.h"

+#include "blockheap.h"
 #include "cliprect.h"
 #include "gal.h"
 #include "internals.h"
@@ -158,7 +159,7 @@ void mg_DestroyFreeQMSGList (void)
 pthread_key_t __mg_threadinfo_key;
 #endif

-MSGQUEUE* mg_AllocMsgQueueForThisThread (BOOL sign_in)
+MSGQUEUE* mg_AllocMsgQueueForThisThread (void)
 {
    MSGQUEUE* pMsgQueue;

@@ -176,14 +177,13 @@ MSGQUEUE* mg_AllocMsgQueueForThisThread (BOOL sign_in)
    pthread_setspecific (__mg_threadinfo_key, pMsgQueue);
 #endif

-    if (sign_in) {
-        SendMessage (HWND_DESKTOP, MSG_MANAGE_MSGTHREAD,
-                MSGTHREAD_SIGNIN, (LPARAM)pMsgQueue);
-    }
+    // register this new message queue
+    SendMessage (HWND_DESKTOP, MSG_MANAGE_MSGTHREAD,
+            MSGTHREAD_SIGNIN, (LPARAM)pMsgQueue);
    return pMsgQueue;
 }

-void mg_FreeMsgQueueForThisThread (BOOL sign_off)
+void mg_FreeMsgQueueForThisThread (void)
 {
    MSGQUEUE* pMsgQueue;

@@ -194,11 +194,6 @@ void mg_FreeMsgQueueForThisThread (BOOL sign_off)
            _WRN_PRINTF ("there are still some windows not destroyed\n");
        }

-        if (sign_off) {
-            SendMessage (HWND_DESKTOP, MSG_MANAGE_MSGTHREAD,
-                    MSGTHREAD_SIGNOUT, (LPARAM)pMsgQueue);
-        }
-
        mg_DestroyMsgQueue (pMsgQueue);
        free (pMsgQueue);

@@ -828,9 +823,8 @@ checkagain:
                goto got_ret;
            }
        }
-        else {
+        else
            pMsgQueue->dwState &= ~QS_POSTMSG;
-        }
    }

    /*
@@ -955,12 +949,6 @@ checkagain:

        goto checkagain;
    }
-    else {
-        /* no message, wait again. */
-        if (pMsgQueue->OnIdle && !pMsgQueue->OnIdle (pMsgQueue, FALSE)) {
-            handle_idle_message (pMsgQueue);
-        }
-    }
 #else   /* defined _MGHAVE_VIRTUAL_WINDOW */
    /* no message, idle */
    if (bWait) {
@@ -970,11 +958,6 @@ checkagain:
        }
        goto checkagain;
    }
-    else {
-        if (!pMsgQueue->OnIdle (pMsgQueue, FALE)) {
-            handle_idle_message (pMsgQueue);
-        }
-    }
 #endif  /* not defined _MGHAVE_VIRTUAL_WINDOW */

    /* no message */
@@ -1427,9 +1410,6 @@ LRESULT GUIAPI DispatchMessage (PMSG pMsg)
   to the controls of the main window will be thrown away as well. */
 int __mg_throw_away_messages (PMSGQUEUE pMsgQueue, HWND hWnd)
 {
-    /* For a main window, we use pMainWin to check whether we
-       should throw away a message for controls of the main window.
-       Note that checkAndGetMainWindowIfControl returns NULL for non control. */
    PMAINWIN    pMainWin = (PMAINWIN)hWnd;
    PMSG        pMsg;
    PQMSG       pQMsg;
@@ -1441,6 +1421,16 @@ int __mg_throw_away_messages (PMSGQUEUE pMsgQueue, HWND hWnd)

    LOCK_MSGQ (pMsgQueue);

+    /* for virtual window and main window, use pMainWin to check whether we
+       should throw away a message for controls of a main window.
+       checkAndGetMainWindowIfControl returns NULL for non control. */
+    if (pMainWin != HWND_NULL && pMainWin != HWND_INVALID &&
+            (pMainWin->WinType == TYPE_MAINWIN ||
+             pMainWin->WinType == TYPE_VIRTWIN))
+        pMainWin = (PMAINWIN)hWnd;
+    else
+        pMainWin = NULL;
+
    if (pMsgQueue->pFirstNotifyMsg) {
        PQMSG pPrev = NULL, pNext;
        pQMsg = pMsgQueue->pFirstNotifyMsg;
@@ -243,23 +243,11 @@ int __kernel_alloc_z_order_info (int nr_topmosts, int nr_normals, BOOL with_mask
 #endif  /* deprecated code */

 #ifdef _MGRM_THREADS
-# ifdef __ZI_USE_RWLOCK
+#ifndef __NOUNIX__
    pthread_rwlock_init(&__mg_zorder_info->rwlock, NULL);
-    __mg_zorder_info->rwlock_owner = 0;
-# else
-    do {
-        int ret;
-        pthread_mutexattr_t my_attr;
-        ret = pthread_mutexattr_init(&my_attr);
-        assert(ret == 0);
-        ret = pthread_mutexattr_settype(&my_attr, PTHREAD_MUTEX_RECURSIVE);
-        assert(ret == 0);
-        pthread_mutex_init(&__mg_zorder_info->mutex, &my_attr);
-        ret = pthread_mutexattr_destroy(&my_attr);
-        assert(ret == 0);
-        (void)ret;
-    } while (0);
-#  endif
+#else
+    pthread_mutex_init(&__mg_zorder_info->rwlock, NULL);
+#endif
 #endif
    return 0;
 #endif
@@ -273,11 +261,11 @@ void __kernel_free_z_order_info (ZORDERINFO* zi)
 #else

 #ifdef _MGRM_THREADS
-# ifdef __ZI_USE_RWLOCK
+#ifndef __NOUNIX__
    pthread_rwlock_destroy(&zi->rwlock);
-# else
-    pthread_mutex_destroy(&zi->mutex);
-# endif
+#else
+    pthread_mutex_destroy(&zi->rwlock);
+#endif
 #endif
    free (zi);
    __mg_zorder_info = NULL;
@@ -7,7 +7,7 @@ EXTRA_DIST= misc.c systext.c rwops.c endianrw.c nposix.c clipboard.c \

 libmisc_la_SOURCES = misc.c systext.c rwops.c endianrw.c nposix.c clipboard.c \
                math.c about.c license.c anon_file.c rbtree.c map.c \
-                error.c sockio.c lock_file.c
+                error.c sockio.c

 SRC_FILES = $(libmisc_la_SOURCES)
 LIB_NAME=libmisc
@@ -114,7 +114,7 @@ static LRESULT AboutWinProc (HWND hWnd, UINT message,
        DrawText (hdc,
                "MiniGUI -- a mature cross-platform windowing system "
                "and GUI support system for embedded or IoT devices.\n\n"
-                "Copyright (C) 2002 ~ 2023 FMSoft Co., Ltd.",
+                "Copyright (C) 2002 ~ 2020 FMSoft Co., Ltd.",
                -1, &rcClient, DT_WORDBREAK | DT_CENTER);

        EndPaint (hWnd, hdc);
@@ -1,112 +0,0 @@
-///////////////////////////////////////////////////////////////////////////////
-//
-//                          IMPORTANT NOTICE
-//
-// The following open source license statement does not apply to any
-// entity in the Exception List published by FMSoft.
-//
-// For more information, please visit:
-//
-// https://www.fmsoft.cn/exception-list
-//
-//////////////////////////////////////////////////////////////////////////////
-/*
- *   This file is part of MiniGUI, a mature cross-platform windowing
- *   and Graphics User Interface (GUI) support system for embedded systems
- *   and smart IoT devices.
- *
- *   Copyright (C) 2023, Beijing FMSoft Technologies Co., Ltd.
- *
- *   This program is free software: you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation, either version 3 of the License, or
- *   (at your option) any later version.
- *
- *   This program is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- *   Or,
- *
- *   As this program is a library, any link to this program must follow
- *   GNU General Public License version 3 (GPLv3). If you cannot accept
- *   GPLv3, you need to be licensed from FMSoft.
- *
- *   If you have got a commercial license of this program, please use it
- *   under the terms and conditions of the commercial license.
- *
- *   For more information about the commercial license, please refer to
- *   <http://www.minigui.com/blog/minigui-licensing-policy/>.
- */
-/*
-** lock_file.c: This file include functions for locking/unlocking a file.
-**
-** Create date: 2023/09/10
-**
-** Current maintainer: Wei Yongming.
-*/
-
-#include "common.h"
-
-#ifndef __NOUNIX__
-
-#include "misc.h"
-
-#include <unistd.h>
-#include <sys/file.h>
-#include <fcntl.h>
-#include <errno.h>
-
-void __mg_lock_file_for_read(int fd)
-{
-    struct flock lock;
-
-    lock.l_type = F_RDLCK;
-    lock.l_whence = SEEK_SET;
-    lock.l_start = 0;
-    lock.l_len = 0;
-
-    while (fcntl(fd, F_SETLKW, &lock) == -1 && errno == EINTR);
-}
-
-void __mg_unlock_file_for_read(int fd)
-{
-    struct flock lock;
-
-    lock.l_type = F_UNLCK;
-    lock.l_whence = SEEK_SET;
-    lock.l_start = 0;
-    lock.l_len = 0;
-
-    fcntl(fd, F_SETLK, &lock);
-}
-
-void __mg_lock_file_for_write(int fd)
-{
-    struct flock lock;
-
-    lock.l_type = F_WRLCK;
-    lock.l_whence = SEEK_SET;
-    lock.l_start = 0;
-    lock.l_len = 0;
-
-    while (fcntl(fd, F_SETLKW, &lock) == -1 && errno == EINTR);
-}
-
-void __mg_unlock_file_for_write(int fd)
-{
-    struct flock lock;
-
-    lock.l_type = F_UNLCK;
-    lock.l_whence = SEEK_SET;
-    lock.l_start = 0;
-    lock.l_len = 0;
-
-    fcntl(fd, F_SETLK, &lock);
-}
-
-#endif /* __NOUNIX__ */
@@ -243,7 +243,7 @@ map_entry_t* __mg_map_find (map_t* map, const void* key)
    return entry;
 }

-int __mg_map_erase (map_t* map, const void* key)
+int __mg_map_erase (map_t* map, void* key)
 {
    int retval = -1;
    map_entry_t* entry = NULL;
@@ -299,7 +299,7 @@ ret:
    return retval;
 }

-map_entry_t*  __mg_map_insert_ex2 (map_t* map, const void* key,
+int __mg_map_insert_ex (map_t* map, const void* key,
        const void* val, free_val_fn free_val_alt)
 {
    map_entry_t **pentry;
@@ -307,7 +307,7 @@ map_entry_t*  __mg_map_insert_ex2 (map_t* map, const void* key,
    map_entry_t *parent;

    if (map == NULL)
-        return NULL;
+        return -1;

    WRLOCK_MAP (map);

@@ -317,7 +317,7 @@ map_entry_t*  __mg_map_insert_ex2 (map_t* map, const void* key,

    while (*pentry) {
        int ret;
-
+       
        if (map->comp_key)
            ret = map->comp_key (key, (*pentry)->key);
        else
@@ -354,7 +354,7 @@ map_entry_t*  __mg_map_insert_ex2 (map_t* map, const void* key,
    }

    UNLOCK_MAP (map);
-    return entry;
+    return 0;
 }

 int __mg_map_find_replace_or_insert (map_t* map, const void* key,
@@ -495,6 +495,28 @@ DWORD __mg_os_get_time_ticks (void)
    return (current - startup_time_win32) / 10;
 }

+#if 0   /* deprecated code */
+DWORD __mg_os_get_elapsed_ms (void)
+{
+    static DWORD last;
+    DWORD current = timeGetTime();
+    DWORD elapsed;
+
+    if (current >= last) {
+        elapsed = current - last;
+        return elapsed;
+    }
+    else {
+        /* overflowed */
+        elapsed = BITMASK_DWORD - last;
+        elapsed += current;
+    }
+
+    last = current;
+    return elapsed;
+}
+#endif  /* deprecated code */
+
 #elif defined (HAVE_CLOCK_GETTIME)

 static struct timespec timeval_startup;
@@ -551,6 +573,68 @@ DWORD __mg_os_get_time_ticks (void)
    return ds * 100 + dms;
 }

+#if 0   /* deprecated code */
+DWORD __mg_os_get_elapsed_ms (void)
+{
+    static struct timespec last;
+    DWORD ds, dms;
+    struct timespec current;
+
+    clock_gettime (CLOCK_MONOTONIC, &current);
+    ds = (current.tv_sec - last.tv_sec);
+
+    if (current.tv_sec == last.tv_sec) {
+        dms = (current.tv_nsec - last.tv_nsec) / 1000000L;
+    }
+    else if (current.tv_nsec >= last.tv_nsec) {
+        dms = (current.tv_nsec - last.tv_nsec) / 1000000L;
+    }
+    else {
+        assert (ds > 0);
+
+        ds--;
+        dms = 1000L - (last.tv_nsec - current.tv_nsec) / 1000000L;
+    }
+
+    last = current;
+    return ds * 1000 + dms;
+}
+
+#include <unistd.h>
+#include <poll.h>
+#include <sys/time.h>
+
+static struct timeval timeval_startup;
+void __mg_os_start_time(void)
+{
+    gettimeofday(&timeval_startup, NULL);
+}
+
+DWORD __mg_os_get_time_ms(void)
+{
+    DWORD ds, dms;
+    struct timeval current;
+
+    gettimeofday(&current, NULL);
+    ds = (current.tv_sec - timeval_startup.tv_sec);
+
+    if (current.tv_sec == timeval_startup.tv_sec) {
+        dms = (current.tv_usec - timeval_startup.tv_usec) / 1000L;
+    }
+    else if (current.tv_usec >= timeval_startup.tv_usec) {
+        dms = (current.tv_usec - timeval_startup.tv_usec) / 1000L;
+    }
+    else {
+        assert(ds > 0);
+
+        ds--;
+        dms = 1000L - (timeval_startup.tv_usec - current.tv_usec) / 1000L;
+    }
+
+    return ds * 1000 + dms;
+}
+#endif  /* deprecated code */
+
 #else   /* defined HAVE_CLOCK_GETTIME */

 #error "Please implement __mg_os_start_time and __mg_os_get_time_ticks for your OS"
@@ -1,9 +1,8 @@
-AM_CPPFLAGS = $(WEBP_CFLAGS)
-AM_CPPFLAGS += -I$(abs_top_srcdir)/src/include -I$(abs_top_srcdir)/include
+AM_CPPFLAGS = -I$(abs_top_srcdir)/src/include -I$(abs_top_srcdir)/include

 noinst_LTLIBRARIES = libmybmp.la

-SRC_FILES = mybmp.c winbmp.c gif.c jpeg.c png12.c png16.c webp.c lbm.c pcx.c tga.c
+SRC_FILES = mybmp.c winbmp.c gif.c jpeg.c png12.c png16.c lbm.c pcx.c tga.c

 libmybmp_la_SOURCES = $(SRC_FILES)

@@ -309,7 +309,7 @@ void* __mg_init_jpg (MG_RWops *fp, MYBITMAP* mybmp, RGB* pal)
    struct my_error_mgr *jerr;
    jpeg_init_info_t* init_info;

-    if (!read_be16(fp, &soi_marker) || JMK_SOI != soi_marker)
+    if (!read_be16(fp,&soi_marker) || JMK_SOI != soi_marker)
        goto err; /* not JPEG image*/

    MGUI_RWseek (fp, 0, SEEK_SET);
@@ -353,8 +353,7 @@ void* __mg_init_jpg (MG_RWops *fp, MYBITMAP* mybmp, RGB* pal)
    }

    /* Step 4: set parameters for decompression */
-    cinfo->out_color_space =
-        (mybmp->flags & MYBMP_LOAD_GRAYSCALE) ? JCS_GRAYSCALE: JCS_RGB;
+    cinfo->out_color_space = (mybmp->flags & MYBMP_LOAD_GRAYSCALE) ? JCS_GRAYSCALE: JCS_RGB;
    cinfo->quantize_colors = FALSE;

    if (!(mybmp->flags & MYBMP_LOAD_GRAYSCALE)) {
--- a/Show More
+++ b/Show More