wxSplitterRenderParams
wxRendererXP::GetSplitterParams(const wxWindow * win)
{
    if ( win->HasFlag(wxSP_NO_XP_THEME) )
        return m_rendererNative.GetSplitterParams(win);
    else
        return wxSplitterRenderParams(SASH_WIDTH, 0, false);
}
 // get the splitter parameters: the x field of the returned point is the
 // sash width and the y field is the border width
 virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win)
 {
     return wxSplitterRenderParams(0, 0, 0);
 }