From d9c5e76c5363bdc39734987e18cc4c8a2f85350e Mon Sep 17 00:00:00 2001
From: maxim <maxim@lazarus-ide.org>
Date: Thu, 4 Jun 2015 21:34:59 +0000
Subject: [PATCH] Merged revision(s) 49211 #adcc1a2862 from trunk: Qt: better
 check if variant is really valid handle. ........

git-svn-id: branches/fixes_1_4@49273 -
---
 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 b2460f98e6..d113c56f3f 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 '