Implemented the same simple API for creating customized

in-place editing controls for GTK+ and the generic
   version and demonstrate its use in the sample using
   a wxSpinCtrl.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45518 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/dataview.h

@@ -317,6 +317,9 @@ public:
     static wxVisualAttributes
     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
     
+    GtkWidget *GtkGetTreeView() { return m_treeview; }
+    wxWindow *GetMainWindow() { return (wxWindow*) this; }
+    
 private:
     friend class wxDataViewCtrlDC;
     friend class wxDataViewColumn;