1. wxMenu changes: wxMenuBase appears, several new functions for dynamic menu

handling as well
2. new sample: menu
3. small corrections to wxFileHistory made possible by wxMenu changes
4. ugly fix for panel loaded from resources and TABbing
5. wxDataObject &c doc updates


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4288 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/menuitem.h

@@ -45,12 +45,17 @@ public:
 
     // override base class virtuals
     virtual void SetText(const wxString& strName);
+    virtual wxString GetLabel() const;
     virtual void SetCheckable(bool checkable);
 
     virtual void Enable(bool bDoEnable = TRUE);
     virtual void Check(bool bDoCheck = TRUE);
     virtual bool IsChecked() const;
 
+#if wxUSE_ACCEL
+    virtual wxAcceleratorEntry *GetAccel() const;
+#endif // wxUSE_ACCEL
+
     // unfortunately needed to resolve ambiguity between
     // wxMenuItemBase::IsCheckable() and wxOwnerDrawn::IsCheckable()
     bool IsCheckable() const { return wxMenuItemBase::IsCheckable(); }
@@ -60,9 +65,6 @@ public:
     // menu handle depending on what we're
     int GetRealId() const;
 
-    // delete the submenu
-    void DeleteSubMenu();
-
 private:
     DECLARE_DYNAMIC_CLASS(wxMenuItem)
 };