From 21c9fbe5ee4f79b49618b906f84d88522fe8dfc2 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Tue, 17 Dec 2002 23:22:38 +0000
Subject: [PATCH] reset virtual root to NULL in DeleteAllItems()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@18314 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/msw/treectrl.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp
index 347ed299f5..2cab63afad 100644
--- a/src/msw/treectrl.cpp
+++ b/src/msw/treectrl.cpp
@@ -1659,9 +1659,14 @@ void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item)
 
 void wxTreeCtrl::DeleteAllItems()
 {
-    // delete stored root item.
-    delete GET_VIRTUAL_ROOT();
+    // delete the "virtual" root item.
+    if ( GET_VIRTUAL_ROOT() )
+    {
+        delete GET_VIRTUAL_ROOT();
+        m_pVirtualRoot = NULL;
+    }
 
+    // and all the real items
     if ( !TreeView_DeleteAllItems(GetHwnd()) )
     {
         wxLogLastError(wxT("TreeView_DeleteAllItems"));