From adcc1a286232dad01817e8547dcbc51fc0ac9fae Mon Sep 17 00:00:00 2001
From: zeljko <zeljko@lazarus-ide.org>
Date: Fri, 29 May 2015 15:00:22 +0000
Subject: [PATCH] Qt: better check if variant is really valid handle.

git-svn-id: trunk@49211 -
---
 lcl/interfaces/qt/qtint.pp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lcl/interfaces/qt/qtint.pp b/lcl/interfaces/qt/qtint.pp
index 4c08f2525c..369491d3a8 100644
--- a/lcl/interfaces/qt/qtint.pp
+++ b/lcl/interfaces/qt/qtint.pp
@@ -388,7 +388,7 @@ begin
       {$IFDEF CPU64}
       Obj := TObject(QVariant_toULongLong(V, @Ok));
       {$ENDIF}
-      if OK and (Obj <> nil) then
+      if OK and QtWidgetset.IsValidHandle(HWND(Obj)) then
       begin
         if not (Obj is TQtWidget) then
           raise Exception.Create('QtObjectFromWidgetH: QObject_property returned '