From c1b974c611f963c8f46bdea0aada1b7f6565fc56 Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@digia.com>
Date: Tue, 15 Jan 2013 16:20:09 +0100
Subject: Fix crash in hellowindow example when minimizing.

Task-number: QTBUG-28439

Change-Id: Idcea2712afdbb08b4da2fa230fd8ba6aebd380b7
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
---
 examples/opengl/hellowindow/hellowindow.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'examples')

diff --git a/examples/opengl/hellowindow/hellowindow.cpp b/examples/opengl/hellowindow/hellowindow.cpp
index b1140c4f1d..998b29b540 100644
--- a/examples/opengl/hellowindow/hellowindow.cpp
+++ b/examples/opengl/hellowindow/hellowindow.cpp
@@ -92,7 +92,8 @@ void HelloWindow::mousePressEvent(QMouseEvent *)
 
 void HelloWindow::render()
 {
-    emit needRender(this, m_color, size());
+    if (isExposed())
+        emit needRender(this, m_color, size());
 }
 
 void HelloWindow::updateColor()
-- 
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