wxGLCanvas(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize, long style = 0,
const wxString& name = wxT("GLCanvas") , int *attribList = 0, const wxPalette& palette = wxNullPalette);
- wxGLCanvas( wxWindow *parent, const wxGLContext *shared = (wxGLContext *)NULL,
+ wxGLCanvas( wxWindow *parent, const wxGLContext *shared,
wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize, long style = 0, const wxString& name = wxT("GLCanvas"),
int *attribList = (int*) NULL, const wxPalette& palette = wxNullPalette );
- wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared = (wxGLCanvas *)NULL, wxWindowID id = -1,
+ wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared, wxWindowID id = -1,
const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = 0,
const wxString& name = wxT("GLCanvas"), int *attribList = 0, const wxPalette& palette = wxNullPalette );