From a1a71f0c90481efe7f44e031e3f100c4738ad662 Mon Sep 17 00:00:00 2001
From: paul <paul@lazarus-ide.org>
Date: Thu, 2 Aug 2007 15:52:53 +0000
Subject: [PATCH] (Qt): check OldPoint argument in SetWindowOrgEx (issue
 #0009369)

git-svn-id: trunk@11714 -
---
 lcl/interfaces/qt/qtwinapi.inc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lcl/interfaces/qt/qtwinapi.inc b/lcl/interfaces/qt/qtwinapi.inc
index 48f84bd1d5..f162ef88ff 100644
--- a/lcl/interfaces/qt/qtwinapi.inc
+++ b/lcl/interfaces/qt/qtwinapi.inc
@@ -4046,7 +4046,8 @@ begin
 
   if IsValidDC(DC) then
   begin
-    GetWindowOrgEx(DC, OldPoint);
+    if OldPoint <> nil then
+      GetWindowOrgEx(DC, OldPoint);
     TQtDeviceContext(DC).translate(-NewX, -NewY);
   end;