fix a bug: uninitialize the callback functions for the map of system bitmaps; add __mg_map_get_size

src/include/map.h

@@ -85,6 +85,7 @@ map_entry_t* __mg_map_find (map_t* map, const void* key);
 int   __mg_map_insert (map_t* map, const void* key, const void* val);
 void* __mg_map_find_or_insert (map_t* map, const void* key, const void* val);
 int   __mg_map_erase (map_t* map, void* key);
+int   __mg_map_get_size (map_t* map);
 
 #ifdef __cplusplus
 }

src/misc/map.c

@@ -101,10 +101,21 @@ map_t* __mg_map_create (copy_key_fn copy_key, free_key_fn free_key,
     if (!(map = calloc (1, sizeof(map_t))))
         return NULL;
 
+    map->copy_key = copy_key;
+    map->free_key = free_key;
+    map->copy_val = copy_val;
+    map->free_val = free_val;
+    map->comp_key = comp_key;
+
     WRLOCK_INIT (map);
     return map;
 }
 
+int __mg_map_get_size (map_t* map)
+{
+    return map->size;
+}
+
 int __mg_map_destroy (map_t* map)
 {
     if (map == NULL)

src/sysres/resmgr.c

@@ -487,7 +487,6 @@ void TerminateResManager()
 
     /* Since 5.0.0, destroy the map for system bitmaps */
     __mg_map_destroy (__mg_sys_bmp_map);
-
 }
 
 const char* __sysres_get_system_res_path()

src/sysres/resource.c

@@ -386,6 +386,8 @@ BOOL GUIAPI RegisterSystemBitmap (HDC hdc, const char* rdr_name, const char* id)
             free (bmp);
             return FALSE;
         }
+
+        _DBG_PRINTF ("Registered system bitmap for key: %s\n", key);
     }
 
     return TRUE;
@@ -416,7 +418,7 @@ void GUIAPI UnregisterSystemBitmap (HDC hdc, const char* rdr_name, const char* i
     }
 
     if (__mg_map_erase (__mg_sys_bmp_map, key)) {
-        _WRN_PRINTF ("not registered system bitmap: %s.%s\n", rdr_name, id);
+        _WRN_PRINTF ("not registered system bitmap for key: %s\n", key);
         return;
     }