From a8ab2ae5628a54444a5fd4e20bc3cd3b1c7a5a24 Mon Sep 17 00:00:00 2001
From: dcnieho <dcnieho@7f0cb862-5218-0410-a997-914c9d46530a>
Date: Fri, 20 Jul 2012 06:48:05 +0000
Subject: [PATCH] need to check for NULL as well....

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1349 7f0cb862-5218-0410-a997-914c9d46530a
---
 freeglut/freeglut/src/mswin/fg_main_mswin.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/freeglut/freeglut/src/mswin/fg_main_mswin.c b/freeglut/freeglut/src/mswin/fg_main_mswin.c
index 4fe5538..c777b46 100644
--- a/freeglut/freeglut/src/mswin/fg_main_mswin.c
+++ b/freeglut/freeglut/src/mswin/fg_main_mswin.c
@@ -251,7 +251,8 @@ LRESULT CALLBACK fgPlatformWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam,
         GetCursorPos( &mouse_pos );
         ScreenToClient( window->Window.Handle, &mouse_pos );
         hwnd = ChildWindowFromPoint(window->Window.Handle, mouse_pos);
-        window = fgWindowByHandle(hwnd);
+        if (hwnd)   /* can be NULL if mouse outside parent by the time we get here */
+            window = fgWindowByHandle(hwnd);
     }
 
     if ( window )