Added wxDC:DrawPolygone

Corrected wxBitmap::SetLabel
  Added wxASSERT here and there
  wxDropSource:DoDrop() now returns Cancel when supposed to


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@476 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/button.h

@@ -52,7 +52,6 @@ class wxButton: public wxControl
       long style = 0, const wxString &name = wxButtonNameStr  );
     void SetDefault(void);
     void SetLabel( const wxString &label );
-    wxString GetLabel(void) const;
 };
 
 #endif // __GTKBUTTONH__

include/wx/gtk/dnd.h

@@ -235,12 +235,14 @@ class wxDropSource: public wxObject
 
   protected:
   
+    friend void gtk_drag_callback( GtkWidget *widget, GdkEvent *event, wxDropSource *source );
+  
     void RegisterWindow(void);
     void UnregisterWindow(void);
   
     GtkWidget     *m_widget;
     wxWindow      *m_window;
-    
+    DragResult     m_retValue;
     wxDataObject  *m_data;
     
     wxCursor      m_defaultCursor;