From 71bf9bda93a957d76f473c0a8f0f0d73b667ecfa Mon Sep 17 00:00:00 2001
From: zeljko <zeljko@lazarus-ide.org>
Date: Sat, 2 Oct 2010 16:41:32 +0000
Subject: [PATCH] Qt: fixed result of TQtWidgetSet.EnableWindow()

git-svn-id: trunk@27548 -
---
 lcl/interfaces/qt/qtwinapi.inc | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/lcl/interfaces/qt/qtwinapi.inc b/lcl/interfaces/qt/qtwinapi.inc
index 17042a6913..4085a3a2a9 100644
--- a/lcl/interfaces/qt/qtwinapi.inc
+++ b/lcl/interfaces/qt/qtwinapi.inc
@@ -1350,9 +1350,12 @@ begin
   {$ifdef VerboseQtWinAPI}
     WriteLn('[WinAPI EnableWindow] ');
   {$endif}
-
-  Result := TQtWidget(hwnd).getEnabled;
-  TQtWidget(hWnd).setEnabled(bEnable);
+  Result := False;
+  if HWND <> 0 then
+  begin
+    Result := not TQtWidget(hwnd).getEnabled;
+    TQtWidget(hWnd).setEnabled(bEnable);
+  end;
 end;
 
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