From 42cbde516210997d113e3671dc0bfffb01ac6a1d Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Tue, 20 Sep 2011 18:37:08 +0000
Subject: [PATCH] Reset the expander column when clearing columns in generic
 wxDVC.

The expander column becomes invalid when all columns are cleared, don't keep
a dangling pointer.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@69165 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/generic/datavgen.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/generic/datavgen.cpp b/src/generic/datavgen.cpp
index 6f44e1d13e..745e38b470 100644
--- a/src/generic/datavgen.cpp
+++ b/src/generic/datavgen.cpp
@@ -4357,6 +4357,7 @@ bool wxDataViewCtrl::DeleteColumn( wxDataViewColumn *column )
 
 bool wxDataViewCtrl::ClearColumns()
 {
+    SetExpanderColumn(NULL);
     m_cols.Clear();
     m_colsBestWidths.clear();
     OnColumnsCountChanged();
-- 
2.45.2