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[COMCTL32] Button: Use double buffering when themes are enabled.

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This commit is contained in:
Giannis Adamopoulos 2017-11-20 18:51:03 +02:00
parent b3172ae098
commit 1bfbdb6123
1 changed files with 30 additions and 0 deletions
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30
dll/win32/comctl32/theme_button.c
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@ -456,6 +456,36 @@ BOOL BUTTON_PaintWithTheme(HTHEME theme, HWND hwnd, HDC hParamDC, LPARAM prfFlag
else else
drawState = STATE_NORMAL; drawState = STATE_NORMAL;
if (paint == PB_draw || paint == CB_draw)
{
HDC hdc;
HBITMAP hbmp;
RECT rc;
GetClientRect(hwnd, &rc);
hdc = CreateCompatibleDC(hParamDC);
hbmp = CreateCompatibleBitmap(hParamDC, rc.right, rc.bottom);
if (hdc && hbmp)
{
SelectObject(hdc, hbmp);
paint(theme, hwnd, hdc, drawState, dtFlags, state & BST_FOCUS, prfFlag);
BitBlt(hParamDC, 0, 0, rc.right, rc.bottom, hdc, 0, 0, SRCCOPY);
DeleteObject(hbmp);
DeleteDC(hdc);
return TRUE;
}
else
{
ERR("Failed to create DC and bitmap for double buffering\n");
if (hbmp)
DeleteObject(hbmp);
if (hdc)
DeleteDC(hdc);
}
}
paint(theme, hwnd, hParamDC, drawState, dtFlags, state & BST_FOCUS, prfFlag); paint(theme, hwnd, hParamDC, drawState, dtFlags, state & BST_FOCUS, prfFlag);
return TRUE; return TRUE;
} }