//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
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//
//
// $Id: G4OpenGLWin32Viewer.hh,v 1.14 2007/11/10 14:50:01 allison Exp $
// GEANT4 tag $Name:  $
//
// 
// G4OpenGLWin32Viewer : Class to provide WindowsNT specific
//                       functionality for OpenGL in GEANT4

#ifdef G4VIS_BUILD_OPENGLWIN32_DRIVER

#ifndef G4OPENGLWIN32VIEWER_HH
#define G4OPENGLWIN32VIEWER_HH

#include "globals.hh"

#include "G4VViewer.hh"
#include "G4OpenGLSceneHandler.hh"

class G4OpenGLSceneHandler;

class G4OpenGLWin32Viewer: virtual public G4OpenGLViewer {

public:
  G4OpenGLWin32Viewer (G4OpenGLSceneHandler& scene);
  virtual ~G4OpenGLWin32Viewer ();
  void SetView ();
  void ShowView ();
protected:
  void GetWin32Connection ();
  void CreateGLWin32Context ();
  virtual void CreateMainWindow ();
  HDC fHDC;
private:
  static LRESULT CALLBACK WindowProc(HWND,UINT,WPARAM,LPARAM);
  static bool SetWindowPixelFormat(HDC);
private:
  HWND fWindow;
  HGLRC fHGLRC;
};

#endif

#endif
