fix for menu helpstring in the status bar for MDI child frames

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7158 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/frame.h

@@ -192,6 +192,10 @@ protected:
     // something changes
     virtual void PositionStatusBar() { }
 
+    // show the help string for this menu item in the given status bar: the
+    // status bar pointer can be NULL; return TRUE if help was shown
+    bool ShowMenuHelp(wxStatusBar *statbar, int id);
+
     wxStatusBar *m_frameStatusBar;
 #endif // wxUSE_STATUSBAR