Added SetFont to most controls and controls sample

(recompile)
  Added tiny bit of documentation to window.cpp


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@676 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/checkbox.h

@@ -59,6 +59,7 @@ class wxCheckBox: public wxControl
            const wxString& name = wxCheckBoxNameStr );
     void SetValue( bool state );
     bool GetValue(void) const;
+    void SetFont( const wxFont &font );
 };
 
 #endif // __GTKCHECKBOXH__