Don't use a destroy event handler to disconnect the native control's delegate as the destroy event propagates and can cause the TLW to remove its delegate at unexpected times, such as when a child control is destroyed but the TLW remains active. Instead, do it in response to the Destroy() call.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63051 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/nonownedwnd.h

@@ -103,6 +103,8 @@ public:
     virtual void HandleResized( double timestampsec );
     virtual void HandleMoved( double timestampsec );
     virtual void HandleResizing( double timestampsec, wxRect* rect );
+    
+    virtual bool Destroy();
 
 protected:
     // common part of all ctors
@@ -117,7 +119,7 @@ protected:
                                    wxShowEffect effect,
                                    unsigned timeout);
     
-    void OnWindowDestroy( wxWindowDestroyEvent &event);
+    virtual void WillBeDestroyed();
 
     wxNonOwnedWindowImpl* m_nowpeer ;