From 03e52c2b0e6a35bbf525e66cd7dabce55ca2539e Mon Sep 17 00:00:00 2001
From: wp_xxyyzz <wp_xxyyzz@8e941d3f-bd1b-0410-a28a-d453659cc2b4>
Date: Thu, 10 Oct 2019 08:07:44 +0000
Subject: [PATCH] jvcllaz: Fix crash when adding TimeFrame controls at
 design-time.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7156 8e941d3f-bd1b-0410-a28a-d453659cc2b4
---
 components/jvcllaz/run/JvTimeFramework/jvtfglance.pas | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/jvcllaz/run/JvTimeFramework/jvtfglance.pas b/components/jvcllaz/run/JvTimeFramework/jvtfglance.pas
index 2e655fde7..90c27d896 100644
--- a/components/jvcllaz/run/JvTimeFramework/jvtfglance.pas
+++ b/components/jvcllaz/run/JvTimeFramework/jvtfglance.pas
@@ -2664,7 +2664,7 @@ begin
   DrawCellTitleFrame(ACanvas, ATitleRect, Attr);
 
   // Draw the scroll buttons
-  if Assigned(Cell) then begin
+  if Assigned(Cell) and Assigned(Viewer) then begin
     Viewer.SetTo(Cell);
     DrawScrollButtons(ACanvas, CellScrollBtnRect(ATitleRect));
   end;