制作一个基于MFC对话框的OpenGL类

// Format Must Support OpenGL
　　　PFD_DOUBLEBUFFER, // Must Support Double Buffering
　　　PFD_TYPE_RGBA, // Request An RGBA Format
　　　m_DMsaved.dmBitsPerPel, // Select Our Color Depth
　　　0, 0, 0, 0, 0, 0, // Color Bits Ignored
　　　0, // No Alpha Buffer
　　　0, // Shift Bit Ignored
　　　0, // No Accumulation Buffer
　　　0, 0, 0, 0, // Accumulation Bits Ignored
　　　16, // 16Bit Z-Buffer (Depth Buffer)
　　　0, // No Stencil Buffer
　　　0, // No Auxiliary Buffer
　　　PFD_MAIN_PLANE, // Main Drawing Layer
　　　0, // Reserved
　　　0, 0, 0 // Layer Masks Ignored
　　};

　　if ( !( m_hDC = ::GetDC ( m_hWnd ) ) ) { // Did We Get A Device Context?
　　　KillGLWindow (); // Reset The Display
　　　TRACE ( "Can't Create A GL Device Context." );
　　　return FALSE;
　　}

　　if ( !( PixelFormat = ChoosePixelFormat ( m_hDC, &pfd ) ) ) { // Did Windows Find A Matching Pixel Format?
　　　KillGLWindow (); // Reset The Display
　　　TRACE ( "Can't Find A Suitable PixelFormat." );
　　　return FALSE;
　　}

　　if ( !SetPixelFormat ( m_hDC, PixelFormat, &pfd ) ){ // Are We Able To Set The Pixel Format?
　　　KillGLWindow (); // Reset The Display
　　　TRACE ( "Can't Set The PixelFormat." );
　　　return FALSE;
　　}

　　if ( !( m_hRC = wglCreateContext ( m_hDC ) ) ) { // Are We Able To Get A Rendering Context?
　　　KillGLWindow (); // Reset The Display
　　　TRACE( " Can't Create A GL Rendering Context." );
　　　return FALSE;
　　}

　　if ( !wglMakeCurrent ( m_hDC, m_hRC ) ) { // Try To Activate The Rendering Context
　　　KillGLWindow (); // Reset The Display
　　　TRACE ( "Can't Activate The GL Rendering Context." );
　　　return FALSE;
　　}　

　　if ( !InitGL () ) { // Initialize Our Newly Created GL Window
　　　KillGLWindow (); // Reset The Display
　　　TRACE ( "Initialization Failed." );
　　　return FALSE;
　　}
　　m_bInit = TRUE;
　　return 0;
　}

　void COpenGL::KillGLWindow()
　{
　　if (m_bFullScreen) // Are We In Fullscreen Mode?
　　{
　　　if (!ChangeDisplaySettings(NULL,CDS_TEST)) { // if the shortcut doesn't work
　　　　ChangeDisplaySettings(NULL,CDS_RESET); // Do it anyway (to get the values out of the registry)
　　　　ChangeDisplaySettings(&m_DMsaved,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

关键词：制作一个基于MFC对话框的OpenGL类