From cf49cf2b645dcc4bb3c733983272bbfd08ff3aa2 Mon Sep 17 00:00:00 2001
From: Vincent Wei <vincent@minigui.org>
Date: Thu, 3 Nov 2022 16:11:06 +0800
Subject: [PATCH] do not call UpdateInvalidClient in ScrollWindow: this may
 break update logical of control

---
 src/gui/window.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/gui/window.c b/src/gui/window.c
index 1c5f09b1..14bc96a9 100644
--- a/src/gui/window.c
+++ b/src/gui/window.c
@@ -3245,7 +3245,7 @@ int GUIAPI ScrollWindowEx (HWND hWnd, int dx, int dy,
         rcScroll = rcClient;
 
     /*
-     * BUGFIX: if we scrolled all area, the all area must
+     * BUGFIX: if we scrolled all area, the whole area must
      * be set as invalidate (dongjunjie 2010/7/28)
      */
     if ((dx != 0 && abs(dx) >= RECTW(rcScroll)) ||
@@ -3281,7 +3281,6 @@ int GUIAPI ScrollWindowEx (HWND hWnd, int dx, int dy,
     }
 
     SendMessage (HWND_DESKTOP, MSG_SCROLLMAINWIN, (WPARAM)hWnd, (LPARAM)(&swi));
-    UpdateInvalidClient(hWnd, FALSE);
 
     /* show caret */
     if (fCaret) ShowCaretEx (hWnd, FALSE);