From b38e5da178e02262cd081d1495067a8521bc2159 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Fri, 18 May 2007 16:27:25 +0000
Subject: [PATCH] don't dereference NULL parent in wxMDIChildFrame dtor if it
 hadn't been really created

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@46110 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/msw/mdi.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/msw/mdi.cpp b/src/msw/mdi.cpp
index 874d23d937..7245f39a0f 100644
--- a/src/msw/mdi.cpp
+++ b/src/msw/mdi.cpp
@@ -778,6 +778,10 @@ bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 
 wxMDIChildFrame::~wxMDIChildFrame()
 {
+    // if we hadn't been created, there is nothing to destroy
+    if ( !m_hWnd )
+        return;
+
     // will be destroyed by DestroyChildren() but reset them before calling it
     // to avoid using dangling pointers if a callback comes in the meanwhile
 #if wxUSE_TOOLBAR
-- 
2.45.2