Added empty Raise() and Lower() methods for compatibilty.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@500 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/window.h

@@ -151,6 +151,14 @@ public:
   void OnSysColourChanged( wxSysColourChangedEvent &WXUNUSED(event) ) {};
 
   virtual bool IsShown() const;
+
+  // Raise the window to the top of the Z order
+  virtual void Raise(void) {};
+
+  // Lower the window to the bottom of the Z order
+  virtual void Lower(void) {};
+
+
   virtual bool IsRetained();
   virtual wxWindow *FindWindow( long id );
   virtual wxWindow *FindWindow( const wxString& name );