wxWindowID id = wxID_ANY, const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize, long style = 0,
const wxString& name = _T("TestGLCanvas") );
wxWindowID id = wxID_ANY, const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize, long style = 0,
const wxString& name = _T("TestGLCanvas") );