make sure ShowEvent doesn't get triggered to early during construction

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63618 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/iphone/private.h

@@ -173,9 +173,12 @@ public :
     virtual bool IsActive() { return true; }
     
     wxNonOwnedWindow*   GetWXPeer() { return m_wxPeer; }
+
+    virtual bool InitialShowEventSent() { return m_initialShowSent; }
 protected :
     WX_UIWindow          m_macWindow;
     void *              m_macFullScreenData ;
+    bool                m_initialShowSent;
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxNonOwnedWindowIPhoneImpl)
 };