1. wxDir works for MSW and documented

2. wxDateTime works with dates very close to the Epoch
3. setting font for wxRadioBox works


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4899 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/radiobox.h

@@ -78,6 +78,8 @@ public:
     // implementation only from now on
     // -------------------------------
 
+    virtual bool SetFont(const wxFont& font);
+
     long MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
     WXHWND *GetRadioButtons() const { return m_radioButtons; }
     bool ContainsHWND(WXHWND hWnd) const;