From 647f1e99a3d663afaaf31ffcff477b613d1469af Mon Sep 17 00:00:00 2001
From: blikblum <blikblum@8e941d3f-bd1b-0410-a28a-d453659cc2b4>
Date: Mon, 15 Dec 2008 23:37:47 +0000
Subject: [PATCH] * Check if Component is being destroyed in
 TVirtualTreeColumns.Update

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@637 8e941d3f-bd1b-0410-a28a-d453659cc2b4
---
 components/virtualtreeview-unstable/VirtualTrees.pas | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/components/virtualtreeview-unstable/VirtualTrees.pas b/components/virtualtreeview-unstable/VirtualTrees.pas
index 496f729d4..50ebe578d 100644
--- a/components/virtualtreeview-unstable/VirtualTrees.pas
+++ b/components/virtualtreeview-unstable/VirtualTrees.pas
@@ -8386,6 +8386,10 @@ end;
 procedure TVirtualTreeColumns.Update(Item: TCollectionItem);
 
 begin
+  //lcl
+  // Skip while Destroying
+  if csDestroying in FHeader.TreeView.ComponentState then
+    Exit;
   // This is the only place which gets notified when a new column has been added or removed
   // and we need this event to adjust the column position array.
   InitializePositionArray;