[NTUSER] co_WinPosSetWindowPos(): Fix missing redraw (reactos#8572)

Doug-Lyons · web-flow · commit c77e0e5124dd · 2026-01-10T23:20:17.000+03:00
Fixes missing outline and garbage in the shell search combo box
when the separator is moved.

CORE-19912, CORE-19147
diff --git a/win32ss/user/ntuser/winpos.c b/win32ss/user/ntuser/winpos.c
@@ -2023,7 +2023,8 @@ co_WinPosSetWindowPos(
       Window->state |= WNDS_SENDNCPAINT;
    }
 
-   if (!(WinPos.flags & SWP_NOREDRAW) && ((WinPos.flags & SWP_AGG_STATUSFLAGS) != SWP_AGG_NOPOSCHANGE))
+   if ((!(WinPos.flags & SWP_NOREDRAW) && ((WinPos.flags & SWP_AGG_STATUSFLAGS) != SWP_AGG_NOPOSCHANGE)) ||
+       ((WinPos.flags & SWP_NOZORDER) && (WinPos.flags & SWP_NOOWNERZORDER)))
    {
       /* Determine the new visible region */
       VisAfter = VIS_ComputeVisibleRegion(Window, FALSE, FALSE,

Original file line number	Diff line number	Diff line change
`@@ -2023,7 +2023,8 @@ co_WinPosSetWindowPos(`
`2023`	`2023`	`Window->state \|= WNDS_SENDNCPAINT;`
`2024`	`2024`	`}`
`2025`	`2025`
`2026`		`- if (!(WinPos.flags & SWP_NOREDRAW) && ((WinPos.flags & SWP_AGG_STATUSFLAGS) != SWP_AGG_NOPOSCHANGE))`
	`2026`	`+ if ((!(WinPos.flags & SWP_NOREDRAW) && ((WinPos.flags & SWP_AGG_STATUSFLAGS) != SWP_AGG_NOPOSCHANGE)) \|\|`
	`2027`	`+ ((WinPos.flags & SWP_NOZORDER) && (WinPos.flags & SWP_NOOWNERZORDER)))`
`2027`	`2028`	`{`
`2028`	`2029`	`/* Determine the new visible region */`
`2029`	`2030`	`VisAfter = VIS_ComputeVisibleRegion(Window, FALSE, FALSE,`