From 591e2a1e096618979250f062648b731367e60710 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Trond=20Kjern=C3=A5sen?= <trond.kjernasen@nokia.com>
Date: Tue, 6 Jul 2010 16:18:02 +0200
Subject: Don't call GetDC() nedlessly.

It seems that the CS_OWNDC class style flag only returns the same
DC when GetDC() is called in the same thread that created the window.
This in turn generates a bad DC resource leak if you have a rendering
thread with one or more GL context switches, so just call GetDC() when
you actually need to.

Reviewed-by: Kim
---
 src/opengl/qgl_win.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/opengl/qgl_win.cpp b/src/opengl/qgl_win.cpp
index 5ab944a..52988b6 100644
--- a/src/opengl/qgl_win.cpp
+++ b/src/opengl/qgl_win.cpp
@@ -1283,7 +1283,7 @@ void QGLContext::makeCurrent()
     if (d->rc == wglGetCurrentContext() || !d->valid)       // already current
         return;
 
-    if (d->win) {
+    if (d->win && !d->dc) {
         d->dc = GetDC(d->win);
         if (!d->dc) {
             qwglError("QGLContext::makeCurrent()", "GetDC()");
-- 
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