[reactos] 01/01: [COMCTL32] button: Don't erase the area of the checkbox or the text. Attempt to fix the menace of the world, CORE-13278. Note that this can also cause visual glitches for classic check boxes or radio buttons.

[Giannis Adamopoulos]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=75a80ec82309a19632251…

commit 75a80ec82309a19632251bfe6aa9e7f14132a86f
Author:     Giannis Adamopoulos <gadamopoulos(a)reactos.org>
AuthorDate: Thu Jan 10 23:35:56 2019 +0200
Commit:     Giannis Adamopoulos <gadamopoulos(a)reactos.org>
CommitDate: Thu Jan 10 23:38:02 2019 +0200

    [COMCTL32] button: Don't erase the area of the checkbox or the text.
    Attempt to fix the menace of the world, CORE-13278.
    Note that this can also cause visual glitches for classic check boxes or radio
buttons.
---
 dll/win32/comctl32/button.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/dll/win32/comctl32/button.c b/dll/win32/comctl32/button.c
index 59067471f1..602a37c7a7 100644
--- a/dll/win32/comctl32/button.c
+++ b/dll/win32/comctl32/button.c
@@ -1550,7 +1550,9 @@ static void CB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT
action )
 
     /* Since WM_ERASEBKGND does nothing, first prepare background */
     if (action == ODA_SELECT) FillRect( hDC, &rbox, hBrush );
+#ifndef __REACTOS__
     if (action == ODA_DRAWENTIRE) FillRect( hDC, &client, hBrush );
+#endif
 
     /* Draw label */
     client = rtext;
@@ -1616,6 +1618,15 @@ static void CB_Paint( const BUTTON_INFO *infoPtr, HDC hDC, UINT
action )
     if (action == ODA_DRAWENTIRE)
         BUTTON_DrawLabel(infoPtr, hDC, dtFlags, &rtext);
 
+#ifdef __REACTOS__
+    if (action == ODA_DRAWENTIRE)
+    {
+        ExcludeClipRect(hDC, rbox.left, rbox.top, rbox.right, rbox.bottom);
+        ExcludeClipRect(hDC, rtext.left, rtext.top + 1, rtext.right, rtext.bottom - 1);
+        FillRect( hDC, &client, hBrush );
+    }
+#endif
+
     /* ... and focus */
     if (action == ODA_FOCUS || (state & BST_FOCUS))
     {