From e42300806eff01237cd9cfce805a9145bc54227f Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Tue, 9 Apr 2002 23:32:40 +0000
Subject: [PATCH] Fixed a crash bug in the WM_ACTIVATE code (thanks John!)

---
 src/video/wincommon/SDL_sysevents.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/video/wincommon/SDL_sysevents.c b/src/video/wincommon/SDL_sysevents.c
index 459817bab..b2b30350d 100644
--- a/src/video/wincommon/SDL_sysevents.c
+++ b/src/video/wincommon/SDL_sysevents.c
@@ -190,6 +190,10 @@ LONG CALLBACK WinMessage(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 			BOOL minimized;
 			Uint8 appstate;
 
+			if ( ! this->screen ) {
+				/* What do we do when we get the screen? */
+				return(0);
+			}
 			minimized = HIWORD(wParam);
 			if ( !minimized && (LOWORD(wParam) != WA_INACTIVE) ) {
 				/* Gain the following states */