From 108e9a59dc588c84a99de6de3ddafe1b7e6d0731 Mon Sep 17 00:00:00 2001
From: zeljko <zeljko@lazarus-ide.org>
Date: Mon, 14 Oct 2013 06:21:35 +0000
Subject: [PATCH] Qt: invalidate clientrect cache when viewport of scrollable
 form is resized.QTSCROLLABLEFORMS part.

git-svn-id: trunk@43241 -
---
 lcl/interfaces/qt/qtwidgets.pas | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lcl/interfaces/qt/qtwidgets.pas b/lcl/interfaces/qt/qtwidgets.pas
index 6f4a6f058b..5abddbf6d5 100644
--- a/lcl/interfaces/qt/qtwidgets.pas
+++ b/lcl/interfaces/qt/qtwidgets.pas
@@ -6055,11 +6055,15 @@ begin
         HaveVertBar := Assigned(FVScrollbar);
         HaveHorzBar := Assigned(FHScrollbar);
         if (caspComputingBounds in LCLObject.AutoSizePhases) then
+        begin
           {$IF DEFINED(VerboseQt) OR DEFINED(VerboseQtCustomControlResizeDeadlock)}
           writeln('*** INTERCEPTED RESIZE DEADLOCK *** ',LCLObject.ClassName,
             ':',LCLObject.Name)
           {$ENDIF}
-        else
+          {$IFDEF QTSCROLLABLEFORMS}
+          LCLObject.InvalidateClientRectCache(True);
+          {$ENDIF}
+        end else
           LCLObject.DoAdjustClientRectChange(HaveVertBar or HaveHorzBar);
       end else
         LCLObject.DoAdjustClientRectChange;