1. added SetSelection() to wxItemContainer and removed its declarations

from derived classes
2. made wxItemContainer::Select() non virtual: it simply calls SetSelection()
3. renamed wxListBox::SetSelection(n, select) to DoSetSelection() for all
   ports and defined non virtual SetSelection() overloads in the base class
   to avoid virtual functions hiding


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32004 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/os2/listbox.h

@@ -114,8 +114,8 @@ public:
     virtual int           FindString(const wxString& rsString) const;
 
     virtual bool          IsSelected(int n) const;
-    virtual void          SetSelection( int  n
-                                       ,bool bSelect = TRUE
+    virtual void          DoSetSelection( int  n
+                                       ,bool bSelect
                                       );
     virtual int           GetSelection(void) const;
     virtual int           GetSelections(wxArrayInt& raSelections) const;