From f439ee0b2fa233baa36bf5aa1c9974686bd342a8 Mon Sep 17 00:00:00 2001
From: zeljko <zeljko@lazarus-ide.org>
Date: Tue, 7 Feb 2017 16:56:47 +0000
Subject: [PATCH] Qt5: better check for dangling handle pointer.

git-svn-id: trunk@54113 -
---
 lcl/interfaces/qt5/qtwscontrols.pp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lcl/interfaces/qt5/qtwscontrols.pp b/lcl/interfaces/qt5/qtwscontrols.pp
index 8fee9de81a..a5cd48e6cd 100644
--- a/lcl/interfaces/qt5/qtwscontrols.pp
+++ b/lcl/interfaces/qt5/qtwscontrols.pp
@@ -294,7 +294,8 @@ begin
   Result := False;
   if not WSCheckHandleAllocated(AWincontrol, 'GetText') then
     Exit;
-
+  if not QtWidgetSet.IsValidHandle(AWinControl.Handle) then
+    exit;
   Result := not TQtWidget(AWinControl.Handle).getTextStatic;
   if Result then
     AText := UTF16ToUTF8(TQtWidget(AWinControl.Handle).getText);