virtual wxSize GetTabSize(wxDC& dc, wxWindow* wnd, const wxString& caption,
const wxBitmap& bitmap, bool active,
int close_button_state, int* x_extent);
virtual wxSize GetTabSize(wxDC& dc, wxWindow* wnd, const wxString& caption,
const wxBitmap& bitmap, bool active,
int close_button_state, int* x_extent);