[PATCH 1/6] comctl32/theme_scrollbar: Draw parent background before drawing control parts.
Zhiyi Zhang
zzhang at codeweavers.com
Tue Jun 22 03:20:51 CDT 2021
Control parts may be transparent, thus they need to be drawn on top of parent window background.
Otherwise, black artifacts may occur.
Signed-off-by: Zhiyi Zhang <zzhang at codeweavers.com>
---
dlls/comctl32/theme_scrollbar.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/dlls/comctl32/theme_scrollbar.c b/dlls/comctl32/theme_scrollbar.c
index 304ff5bacbc..7cc59bbd1e5 100644
--- a/dlls/comctl32/theme_scrollbar.c
+++ b/dlls/comctl32/theme_scrollbar.c
@@ -332,6 +332,8 @@ static void paint_scrollbar(HWND hwnd, HTHEME theme)
else
state = SZB_RIGHTALIGN;
+ if (IsThemeBackgroundPartiallyTransparent(theme, SBP_SIZEBOX, state))
+ DrawThemeParentBackground(hwnd, dc, NULL);
DrawThemeBackground(theme, dc, SBP_SIZEBOX, state, &r, NULL);
} else {
SCROLLINFO si;
@@ -365,6 +367,8 @@ static void paint_scrollbar(HWND hwnd, HTHEME theme)
}
}
+ DrawThemeParentBackground(hwnd, dc, NULL);
+
if (vertical) {
SIZE upsize, downsize;
int uparrowstate, downarrowstate;
--
2.30.2
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