From cae2a5356320025401dac7e6b92e68d12016ae9c Mon Sep 17 00:00:00 2001
From: berak <px1704@web.de>
Date: Tue, 6 Nov 2018 11:43:58 +0100
Subject: [PATCH] highgui: fix broken waitKey() condition in window_w32

---
 modules/highgui/src/window_w32.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/highgui/src/window_w32.cpp b/modules/highgui/src/window_w32.cpp
index a4ec2d51b6..e67fb4e187 100644
--- a/modules/highgui/src/window_w32.cpp
+++ b/modules/highgui/src/window_w32.cpp
@@ -1976,7 +1976,7 @@ cvWaitKey( int delay )
         MSG message;
         int is_processed = 0;
 
-        if( delay <= 0 )
+        if( (delay <= 0) && hg_windows)
             GetMessage(&message, 0, 0, 0);
         else if( PeekMessage(&message, 0, 0, 0, PM_REMOVE) == FALSE )
         {