wxString str = wxString::Format (wxT ("%02d:%02d:%02d"), h, m, s);
wxDouble str_width;
wxDouble str_height;
wxDouble str_descent;
wxDouble str_leading;
gc->GetTextExtent (str, &str_width, &str_height, &str_descent, &str_leading);
wxString str = wxString::Format (wxT ("%02d:%02d:%02d"), h, m, s);
wxDouble str_width;
wxDouble str_height;
wxDouble str_descent;
wxDouble str_leading;
gc->GetTextExtent (str, &str_width, &str_height, &str_descent, &str_leading);