From c0fd60207aee5bf45d4b4a3d87faa239ba83cb16 Mon Sep 17 00:00:00 2001
From: narzoul <narzoul@users.noreply.github.com>
Date: Sun, 28 Feb 2016 17:45:45 +0100
Subject: [PATCH] Added invalidation of child windows on scroll events

Fixed in issue with adjusting the game speed slider in StarCraft's Battle.net interface.
It was resulting in a WM_HSCROLL message erasing the parent window background without also
redrawing the child windows (labels) on it.
---
 DDrawCompat/CompatGdiWinProc.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/DDrawCompat/CompatGdiWinProc.cpp b/DDrawCompat/CompatGdiWinProc.cpp
index 6392a43..57a941b 100644
--- a/DDrawCompat/CompatGdiWinProc.cpp
+++ b/DDrawCompat/CompatGdiWinProc.cpp
@@ -249,7 +249,7 @@ namespace
 
 	void updateScrolledWindow(HWND hwnd)
 	{
-		RedrawWindow(hwnd, nullptr, nullptr, RDW_ERASE | RDW_FRAME | RDW_INVALIDATE);
+		RedrawWindow(hwnd, nullptr, nullptr, RDW_ERASE | RDW_FRAME | RDW_INVALIDATE | RDW_ALLCHILDREN);
 	}
 }