Cleaned up SetMenuStrings, factoring out redo and undo label accessors at the same time

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@18369 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/cmdproc.h

@@ -69,9 +69,18 @@ public:
     virtual bool CanUndo() const;
     virtual bool CanRedo() const;
 
+    // Initialises the current command and menu strings.
     virtual void Initialize();
+
+    // Sets the Undo/Redo menu strings for the current menu.
     virtual void SetMenuStrings();
 
+    // Gets the current Undo menu label.
+    wxString GetUndoMenuLabel() const;
+
+    // Gets the current Undo menu label.
+    wxString GetRedoMenuLabel() const;
+
 #if wxUSE_MENUS
     // Call this to manage an edit menu.
     void SetEditMenu(wxMenu *menu) { m_commandEditMenu = menu; }