Do not issue a GetUpdateRect() to query an update region for
WM_PAINT(wParam=HDC) case. Instead, use GetClientRect() for a bounding
rect.
diff --git a/dlls/comctl32/treeview.c b/dlls/comctl32/treeview.c
index c148d83..63841cb 100644
--- a/dlls/comctl32/treeview.c
+++ b/dlls/comctl32/treeview.c
@@ -2849,18 +2849,8 @@
if (wParam)
{
hdc = (HDC)wParam;
- if (!GetUpdateRect(infoPtr->hwnd, &rc, TRUE))
- {
- HBITMAP hbitmap;
- BITMAP bitmap;
- hbitmap = GetCurrentObject(hdc, OBJ_BITMAP);
- if (!hbitmap) return 0;
- GetObjectW(hbitmap, sizeof(BITMAP), &bitmap);
- rc.left = 0; rc.top = 0;
- rc.right = bitmap.bmWidth;
- rc.bottom = bitmap.bmHeight;
- TREEVIEW_EraseBackground(infoPtr, (HDC)wParam);
- }
+ GetClientRect(infoPtr->hwnd, &rc);
+ TREEVIEW_EraseBackground(infoPtr, hdc);
}
else
{
