#ifndef CONSTANTS_H
#define CONSTANTS_H
#include "wx/wx.h"
#endif

#ifndef MYGLCANVAS_H
#define MYGLCANVAS_H
#include "wx/glcanvas.h"

class MyGLCanvas : public wxGLCanvas
{
public:
    MyGLCanvas(wxWindow*, const wxString& title);

    void OnSize(wxSizeEvent&);
    void OnPaint( wxPaintEvent&);
    void OnEraseBackground(wxEraseEvent&);
    void OnMouse(wxMouseEvent&);
    ~MyGLCanvas();

private:
	DECLARE_EVENT_TABLE()
};
#endif

#include "MyGLCanvas.h"

BEGIN_EVENT_TABLE(MyGLCanvas, wxGLCanvas)
    EVT_SIZE(MyGLCanvas::OnSize)
    EVT_PAINT(MyGLCanvas::OnPaint)
    EVT_ERASE_BACKGROUND(MyGLCanvas::OnEraseBackground)
    EVT_MOUSE_EVENTS(MyGLCanvas::OnMouse)
END_EVENT_TABLE()

// constructor
MyGLCanvas::MyGLCanvas(wxWindow* parent, const wxString& title)
       : wxGLCanvas(parent, -1, wxDefaultPosition, wxSize(300,
	   300), wxDEFAULT_FRAME_STYLE)
{
	Centre(wxBOTH);
}
void MyGLCanvas::OnPaint( wxPaintEvent& event )
{
    wxPaintDC dc(this);
}
void MyGLCanvas::OnSize(wxSizeEvent& event)
{
}
void MyGLCanvas::OnEraseBackground(wxEraseEvent& event)
{
}
void MyGLCanvas::OnMouse( wxMouseEvent& event )
{
}
MyGLCanvas::~MyGLCanvas() {
}

#ifndef WINMAIN_H
#define WINMAIN_H
#include "Constants.h"
const int WIN_MAIN_WIDTH = 400;
const int WIN_MAIN_HEIGHT = 400;
class WinMain : public wxFrame
{
public:
  
    WinMain();
    WinMain(wxFrame*, const wxString& title);

private:
	
};

#endif

#include "WinMain.h"
// constructor
WinMain::WinMain(wxFrame* parent, const wxString& title)
       : wxFrame(parent, -1, title, wxDefaultPosition, wxSize(WIN_MAIN_WIDTH,
	   WIN_MAIN_HEIGHT), wxDEFAULT_FRAME_STYLE)
{
	Centre(wxBOTH);
}

-------------------------------------------------
Contents of main.cpp
-------------------------------------------------
[code]
#include "WinMain.h"
#include "MyGLCanvas.h"

class MyApp : public wxApp
{
public:
       virtual bool OnInit();
};

bool MyApp::OnInit()
{

    // create the main application window
    WinMain* myWin = new WinMain(NULL, "test");


    //SetTopWindow(myWin);
    //myWin->Show(TRUE);
    return true;
}

IMPLEMENT_APP(MyApp);