#if defined(__WXMSW__)
#include "wx/msw/glcanvas.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/glcanvas.h"
#elif defined(__WXGTK__)
#include "wx/gtk/glcanvas.h"
#if defined(__WXMSW__)
#include "wx/msw/glcanvas.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/glcanvas.h"
#elif defined(__WXGTK__)
#include "wx/gtk/glcanvas.h"