ed,CDS_RESET); // change it to the saved settings
　　　} else {
　　　　ChangeDisplaySettings(NULL,CDS_RESET);
　　　}

　　　ShowCursor(TRUE); // Show Mouse Pointer
　　}

　　if ( m_hRC ) { // Do We Have A Rendering Context?
　　　if ( !wglMakeCurrent ( NULL, NULL ) ) { // Are We Able To Release The DC And RC Contexts?
　　　　TRACE ( "Release Of DC And RC Failed." );
　　　}

　　　if ( !wglDeleteContext ( m_hRC ) ) { // Are We Able To Delete The RC?
　　　　TRACE ( "Release Rendering Context Failed." );
　　　}
　　　m_hRC = NULL; // Set RC To NULL
　　}

　　if ( m_hDC && !::ReleaseDC ( m_hWnd, m_hDC ) ) { // Are We Able To Release The DC
　　　TRACE ( "Release Device Context Failed." );
　　　m_hDC = NULL; // Set DC To NULL
　　}

　　if ( m_hWnd && !::DestroyWindow ( m_hWnd ) ) { // Are We Able To Destroy The Window?
　　　TRACE( "Could Not Release m_hWnd." );
　　　m_hWnd = NULL; // Set m_hWnd To NULL
　　}
　}

　int COpenGL::InitGL()
　{
　　glShadeModel(GL_SMOOTH); // Enable Smooth Shading
　　glClearColor(0.0f, 0.0f, 0.0f, 0.5f); // Black Background
　　glClearDepth(1.0f); // Depth Buffer Setup
　　glEnable(GL_DEPTH_TEST); // Enables Depth Testing
　　glDepthFunc(GL_LEQUAL); // The Type Of Depth Testing To Do
　　glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Really Nice Perspective Calculations
　　glEnable(GL_TEXTURE_2D); // Enable Texture Mapping

　　return TRUE; // Initialization Went OK
　}

　void COpenGL::RenderGLScene()
　{
　　if(!m_bInit) return;

　　glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
　　glLoadIdentity();

　　// EXAMPLE OPENGL CODE START ////////////////////////////////////////////////////////
　　//////////////////////////////////////////////////////////////////////////////
　　static GLfloat xrot; // X Rotation
　　static GLfloat yrot; // Y Rotation
　　static GLfloat zrot; // Z Rotation

　　glPushMatrix(); // Push Matrix Onto Stack (Copy The Current Matrix)
　　glLoadIdentity(); // Reset The Current Modelview Matrix
　　glTranslatef(0.0f,0.0f,-6.0f); // Move Left 1.5 Units And Into The Screen 6.0

　　glRotatef(xrot,1.0f,0.0f,0.0f);
　　glRotatef(yrot,0.0f,1.0f,0.0f);
　　glRotatef(zrot,0.0f,0.0f,1.0f);

　　glBegin(GL_QUADS);
　　// Front Face
　　glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, 1.0f);
　　glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, -1.0f, 1.0f);
　　glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, 1.0f, 1.0f);
　　glColor3f(0.0f,0.0f,1.0f);glVertex3f(-1.0f, 1.0f, 1.0f);
　　// Back Face
　　glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, -1.0f);
　　glColor3f(0.0f,1.0f,0.0f);glVertex3f(-1.0f, 1.0f, -1.0f);
　　glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, 1.0f, -1.0f);
　　glColor3f(0.0f,0.0f,1.0f);glVertex3f( 1.0f, -1.0f, -1.0f);
　　// Top Face
　　glColor3f(0.0f,1.0f,0.0f);glVertex3f(-1.0f, 1.0f, -1.0f);
　　glColor3f(0.0f,0.0f,1.0f);glVertex3f(-1.0f, 1.0f, 1.0f);
　　glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, 1.0f, 1.0f);
　　glColor3f(0.0f,1.0f,0.0f);glV