制作一个基于MFC对话框的OpenGL类

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　　今天写了个基于MFC对话框的OpenGL类：COpenGL，可以在对话框程序中使用OpenGL了，并且提供了全屏与非全屏转换的两个函数，很容易使用，速度快。　　使用方法：在对话框上加一个Static控件（或者其他的也可以），在OnInitDialog()中加人下面这段代码（假设控件ID为IDC_OPENGL，m_openGL是类COpenGL的对象）： Code: CRect rect;GetDlgItem(IDC_OPENGL)->GetWindowRect(rect);ScreenToClient(rect);m_openGL.Create(rect, this);　　然后在适当的地方调用m_openGL.RenderGLScene()就可以了。　　以下是类代码（OpenGL.h和OpenGL.cpp）： Code:#if !defined(AFX_OPENGL_H__38B5D1C8_2DFF_4A7D_9A99_3AC401C19D72__INCLUDED_)#define AFX_OPENGL_H__38B5D1C8_2DFF_4A7D_9A99_3AC401C19D72__INCLUDED_#if _MSC_VER > 1000#pragma once#endif // _MSC_VER > 1000// OpenGL.h : header file///////////////////////////////////////////////////////////////////////////////// COpenGL windowclass COpenGL : public CWnd{　// Construction　public:　　COpenGL();　　　// Attributes　public:　　// Operations　public:　　// Overrides　　// ClassWizard generated virtual function overrides　　//{{AFX_VIRTUAL(COpenGL)　　//}}AFX_VIRTUAL　　// Implementation　public:　　BOOL SetNormScreen();　　BOOL SetFullScreen(int width, int height, int depth);　　virtual void RenderGLScene();　　void Create(CRect rect, CWnd *parent);　　virtual ~COpenGL();　　// Generated message map functions　protected:　　CRect m_rect;　　CWnd* m_parent;　　BOOL m_bFullScreen;　　DEVMODE m_DMsaved;　　BOOL m_bInit;　　int InitGL();　　void KillGLWindow();　　HDC m_hDC;　　HGLRC m_hRC;　　//{{AFX_MSG(COpenGL)　　afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);　　afx_msg void OnPaint();　　afx_msg void OnSize(UINT nType, int cx, int cy);　//}}AFX_MSG　DECLARE_MESSAGE_MAP()};///////////////////////////////////////////////////////////////////////////////{{AFX_INSERT_LOCATION}}// Microsoft Visual C will insert additional declarations immediately before the previous line.#endif // !defined(AFX_OPENGL_H__38B5D1C8_2DFF_4A7D_9A99_3AC401C19D72__INCLUDED_)Code:// OpenGL.cpp : implementation file//#include "stdafx.h"#include "DialogOpenGL.h"#include "OpenGL.h"#include #include #ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif/////////////////////////////////////////////////////////////////////////////// COpenGLCOpenGL::COpenGL():m_bInit(FALSE),m_bFullScreen(FALSE),m_hDC(NULL),m_hRC(NULL),m_parent(NULL){}COpenGL::~COpenGL(){　KillGLWindow(); // Shutdown}BEGIN_MESSAGE_MAP(COpenGL, CWnd)　//{{AFX_MSG_MAP(COpenGL)　　ON_WM_CREATE()　　ON_WM_PAINT()　　ON_WM_SIZE()　　ON_WM_KEYDOWN()　//}}AFX_MSG_MAPEND_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////// COpenGL message handlersvoid COpenGL::Create(CRect rect, CWnd *parent){　if (m_bInit) return;　ASSERT(rect);　ASSERT(parent);　m_rect = rect;　m_parent = parent;　CString className = AfxRegisterWndClass(　　CS_HREDRAW | CS_VREDRAW | CS_OWNDC,NULL,(HBRUSH)GetStockObject(BLACK_BRUSH),NULL);　　CreateEx(0,className,"OpenGL",WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,rect,parent,0);　}　int COpenGL::OnCreate(LPCREATESTRUCT lpCreateStruct) 　{　　if (CWnd::OnCreate(lpCreateStruct) == -1)　　　return -1;　　// TODO: Add your specialized creation code here　　EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &m_DMsaved);　　GLuint PixelFormat; // Holds The Results After Searching For A Match　　static PIXELFORMATDESCRIPTOR pfd= // pfd Tells Windows How We Want Things To Be　　{ 　　　sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor　　　1, // Version Number　　　PFD_DRAW_TO_WINDOW | // Format Must Support Window　　　PFD_SUPPORT_OPENGL | // 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 | 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);glVertex3f( 1.0f, 1.0f, -1.0f);　　// Bottom Face　　glColor3f(1.0f,0.0f,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(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, 1.0f);　　// Right face　　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);glVertex3f( 1.0f, 1.0f, 1.0f);　　glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, -1.0f, 1.0f);　　// Left Face　　glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, -1.0f);　　glColor3f(1.0f,0.0f,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);　　glEnd();　　glPopMatrix(); // Pop Matrix Off The Stack　　xrot =1.3f;　　yrot =1.2f;　　zrot =1.4f; // Decrease The Rotation Variable For The Quad　　//////////////////////////////////////////////////////////////////////////////　　// EXAMPLE OPENGL CODE END //////////////////////////////////////////////////////////　　// Swap our scene to the front　　SwapBuffers(m_hDC);　　Invalidate(FALSE);　}　void COpenGL::OnPaint() 　{　　CPaintDC dc(this); // device context for painting　　　// TODO: Add your message handler code here　　::ValidateRect ( m_hWnd, NULL );　　// Do not call CWnd::OnPaint() for painting messages　}　void COpenGL::OnSize(UINT nType, int cx, int cy) 　{　　CWnd::OnSize(nType, cx, cy);　　// TODO: Add your message handler code here　　if ( cy==0) { // Prevent A Divide By Zero By 　　　cy=1; // Making Height Equal One　　} 　　glViewport(0,0,cx,cy); // Reset The Current Viewport　　glMatrixMode(GL_PROJECTION); // Select The Projection Matrix　　glLoadIdentity(); // Reset The Projection Matrix　　gluPerspective(45.0f,(GLfloat)cx/(GLfloat)cy,0.1f,100.0f); // Calculate The Aspect Ratio Of The Window　　glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix　　glLoadIdentity(); // Reset The Modelview Matrix 　}　BOOL COpenGL::SetFullScreen(int width, int height, int depth)　{　　if(!m_bInit) return FALSE;　　if (m_bFullScreen) return TRUE;　　DEVMODE dmScreenSettings; // Device Mode　　memset(&dmScreenSettings,0,sizeof(dmScreenSettings)); // Makes Sure Memory's Cleared　　dmScreenSettings.dmSize=sizeof(dmScreenSettings); // Size Of The Devmode Structure　　dmScreenSettings.dmPelsWidth = width; // Selected Screen Width　　dmScreenSettings.dmPelsHeight = height; // Selected Screen Height　　dmScreenSettings.dmBitsPerPel = depth; // Selected Bits Per Pixel　　dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;　　// Try To Set Selected Mode And Get Results. NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.　　if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)　　{　　　return m_bFullScreen = FALSE;　　}　　SetParent(NULL);　　SetWindowPos(&CWnd::wndTop,0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), SWP_SHOWWINDOW);　　ShowCursor(FALSE);　　SetFocus();　　return m_bFullScreen = TRUE;　}　BOOL COpenGL::SetNormScreen()　{　　if(!m_bInit) return FALSE;　　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);　　　}　　　SetParent(m_parent);　　　SetWindowPos(&CWnd::wndTop,m_rect.left, m_rect.top, m_rect.Width(), m_rect.Height(), SWP_SHOWWINDOW); 　　　ShowCursor(TRUE); // Show Mouse Pointer　　　m_bFullScreen = FALSE;　　}　return TRUE;} 　　今天写了个基于MFC对话框的OpenGL类：COpenGL，可以在对话框程序中使用OpenGL了，并且提供了全屏与非全屏转换的两个函数，很容易使用，速度快。　　使用方法：在对话框上加一个Static控件（或者其他的也可以），在OnInitDialog()中加人下面这段代码（假设控件ID为IDC_OPENGL，m_openGL是类COpenGL的对象）： Code: CRect rect;GetDlgItem(IDC_OPENGL)->GetWindowRect(rect);ScreenToClient(rect);m_openGL.Create(rect, this);　　然后在适当的地方调用m_openGL.RenderGLScene()就可以了。　　以下是类代码（OpenGL.h和OpenGL.cpp）： Code:#if !defined(AFX_OPENGL_H__38B5D1C8_2DFF_4A7D_9A99_3AC401C19D72__INCLUDED_)#define AFX_OPENGL_H__38B5D1C8_2DFF_4A7D_9A99_3AC401C19D72__INCLUDED_#if _MSC_VER > 1000#pragma once#endif // _MSC_VER > 1000// OpenGL.h : header file///////////////////////////////////////////////////////////////////////////////// COpenGL windowclass COpenGL : public CWnd{　// Construction　public:　　COpenGL();　　　// Attributes　public:　　// Operations　public:　　// Overrides　　// ClassWizard generated virtual function overrides　　//{{AFX_VIRTUAL(COpenGL)　　//}}AFX_VIRTUAL　　// Implementation　public:　　BOOL SetNormScreen();　　BOOL SetFullScreen(int width, int height, int depth);　　virtual void RenderGLScene();　　void Create(CRect rect, CWnd *parent);　　virtual ~COpenGL();　　// Generated message map functions　protected:　　CRect m_rect;　　CWnd* m_parent;　　BOOL m_bFullScreen;　　DEVMODE m_DMsaved;　　BOOL m_bInit;　　int InitGL();　　void KillGLWindow();　　HDC m_hDC;　　HGLRC m_hRC;　　//{{AFX_MSG(COpenGL)　　afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);　　afx_msg void OnPaint();　　afx_msg void OnSize(UINT nType, int cx, int cy);　//}}AFX_MSG　DECLARE_MESSAGE_MAP()};///////////////////////////////////////////////////////////////////////////////{{AFX_INSERT_LOCATION}}// Microsoft Visual C will insert additional declarations immediately before the previous line.#endif // !defined(AFX_OPENGL_H__38B5D1C8_2DFF_4A7D_9A99_3AC401C19D72__INCLUDED_)Code:// OpenGL.cpp : implementation file//#include "stdafx.h"#include "DialogOpenGL.h"#include "OpenGL.h"#include #include #ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif/////////////////////////////////////////////////////////////////////////////// COpenGLCOpenGL::COpenGL():m_bInit(FALSE),m_bFullScreen(FALSE),m_hDC(NULL),m_hRC(NULL),m_parent(NULL){}COpenGL::~COpenGL(){　KillGLWindow(); // Shutdown}BEGIN_MESSAGE_MAP(COpenGL, CWnd)　//{{AFX_MSG_MAP(COpenGL)　　ON_WM_CREATE()　　ON_WM_PAINT()　　ON_WM_SIZE()　　ON_WM_KEYDOWN()　//}}AFX_MSG_MAPEND_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////// COpenGL message handlersvoid COpenGL::Create(CRect rect, CWnd *parent){　if (m_bInit) return;　ASSERT(rect);　ASSERT(parent);　m_rect = rect;　m_parent = parent;　CString className = AfxRegisterWndClass(　　CS_HREDRAW | CS_VREDRAW | CS_OWNDC,NULL,(HBRUSH)GetStockObject(BLACK_BRUSH),NULL);　　CreateEx(0,className,"OpenGL",WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,rect,parent,0);　}　int COpenGL::OnCreate(LPCREATESTRUCT lpCreateStruct) 　{　　if (CWnd::OnCreate(lpCreateStruct) == -1)　　　return -1;　　// TODO: Add your specialized creation code here　　EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &m_DMsaved);　　GLuint PixelFormat; // Holds The Results After Searching For A Match　　static PIXELFORMATDESCRIPTOR pfd= // pfd Tells Windows How We Want Things To Be　　{ 　　　sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor　　　1, // Version Number　　　PFD_DRAW_TO_WINDOW | // Format Must Support Window　　　PFD_SUPPORT_OPENGL | // 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 | 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);glVertex3f( 1.0f, 1.0f, -1.0f);　　// Bottom Face　　glColor3f(1.0f,0.0f,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(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, 1.0f);　　// Right face　　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);glVertex3f( 1.0f, 1.0f, 1.0f);　　glColor3f(0.0f,1.0f,0.0f);glVertex3f( 1.0f, -1.0f, 1.0f);　　// Left Face　　glColor3f(1.0f,0.0f,0.0f);glVertex3f(-1.0f, -1.0f, -1.0f);　　glColor3f(1.0f,0.0f,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);　　glEnd();　　glPopMatrix(); // Pop Matrix Off The Stack　　xrot =1.3f;　　yrot =1.2f;　　zrot =1.4f; // Decrease The Rotation Variable For The Quad　　//////////////////////////////////////////////////////////////////////////////　　// EXAMPLE OPENGL CODE END //////////////////////////////////////////////////////////　　// Swap our scene to the front　　SwapBuffers(m_hDC);　　Invalidate(FALSE);　}　void COpenGL::OnPaint() 　{　　CPaintDC dc(this); // device context for painting　　　// TODO: Add your message handler code here　　::ValidateRect ( m_hWnd, NULL );　　// Do not call CWnd::OnPaint() for painting messages　}　void COpenGL::OnSize(UINT nType, int cx, int cy) 　{　　CWnd::OnSize(nType, cx, cy);　　// TODO: Add your message handler code here　　if ( cy==0) { // Prevent A Divide By Zero By 　　　cy=1; // Making Height Equal One　　} 　　glViewport(0,0,cx,cy); // Reset The Current Viewport　　glMatrixMode(GL_PROJECTION); // Select The Projection Matrix　　glLoadIdentity(); // Reset The Projection Matrix　　gluPerspective(45.0f,(GLfloat)cx/(GLfloat)cy,0.1f,100.0f); // Calculate The Aspect Ratio Of The Window　　glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix　　glLoadIdentity(); // Reset The Modelview Matrix 　}　BOOL COpenGL::SetFullScreen(int width, int height, int depth)　{　　if(!m_bInit) return FALSE;　　if (m_bFullScreen) return TRUE;　　DEVMODE dmScreenSettings; // Device Mode　　memset(&dmScreenSettings,0,sizeof(dmScreenSettings)); // Makes Sure Memory's Cleared　　dmScreenSettings.dmSize=sizeof(dmScreenSettings); // Size Of The Devmode Structure　　dmScreenSettings.dmPelsWidth = width; // Selected Screen Width　　dmScreenSettings.dmPelsHeight = height; // Selected Screen Height　　dmScreenSettings.dmBitsPerPel = depth; // Selected Bits Per Pixel　　dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;　　// Try To Set Selected Mode And Get Results. NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.　　if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)　　{　　　return m_bFullScreen = FALSE;　　}　　SetParent(NULL);　　SetWindowPos(&CWnd::wndTop,0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), SWP_SHOWWINDOW);　　ShowCursor(FALSE);　　SetFocus();　　return m_bFullScreen = TRUE;　}　BOOL COpenGL::SetNormScreen()　{　　if(!m_bInit) return FALSE;　　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);　　　}　　　SetParent(m_parent);　　　SetWindowPos(&CWnd::wndTop,m_rect.left, m_rect.top, m_rect.Width(), m_rect.Height(), SWP_SHOWWINDOW); 　　　ShowCursor(TRUE); // Show Mouse Pointer　　　m_bFullScreen = FALSE;　　}　return TRUE;} 下载本文示例代码


制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类制作一个基于MFC对话框的OpenGL类