From f69330e51e7da1daec7de90845a3aac04894db52 Mon Sep 17 00:00:00 2001
From: zeljko <zeljko@lazarus-ide.org>
Date: Wed, 5 Oct 2011 08:30:49 +0000
Subject: [PATCH] Qt: do not pass OnChange to LCL when value is setted up for
 the first time under 64bit. issue #19881

git-svn-id: trunk@32698 -
---
 lcl/interfaces/qt/qtwidgets.pas | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lcl/interfaces/qt/qtwidgets.pas b/lcl/interfaces/qt/qtwidgets.pas
index a70a81783a..1b85dd72a8 100644
--- a/lcl/interfaces/qt/qtwidgets.pas
+++ b/lcl/interfaces/qt/qtwidgets.pas
@@ -914,7 +914,7 @@ type
   TQtAbstractSpinBox = class(TQtWidget, IQtEdit)
   private
     {$ifdef CPU64 and not WIN64}
-    FParentShowPassed: Integer;
+    FParentShowPassed: PtrInt;
     {$endif}
     FEditingFinishedHook: QAbstractSpinBox_hookH;
     // parts
@@ -8694,7 +8694,9 @@ begin
     if QEvent_type(Event) <> QEventPaint then
     begin
       inc(FParentShowPassed);
+      BeginUpdate;
       setValue(getValue);
+      EndUpdate;
     end;
   end;