set m_isBeingDeleted to true (only) in SendDestroyEvent(); call it as early as possible during the window destruction to ensure that destroy event handlers can still access the full window object

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58246 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/dfb/nonownedwnd.cpp

@@ -153,7 +153,7 @@ bool wxNonOwnedWindow::Create(wxWindow *parent,
 
 wxNonOwnedWindow::~wxNonOwnedWindow()
 {
-    m_isBeingDeleted = true;
+    SendDestroyEvent();
 
     // destroy all children before we destroy the underlying DirectFB window,
     // so that if any of them does something with the TLW, it will still work: