MFC (OpenGLglut.cpp)：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | #include <afxwin.h>#include "OpenGLglut.h"#include "glut.h" class DocBoxy : public CDocument {public: CClientDC *m_pDC; HGLRC hrc; DECLARE_DYNCREATE(DocBoxy) //宣告run-time類別}; IMPLEMENT_DYNCREATE(DocBoxy, CDocument) //宣告DocBoxy為run-time類別 class FrameBoxy : public CFrameWnd {public: afx_msg void OnExit() { //宣告關閉檔案事件 if(MessageBox( TEXT("Are you sure you want to close this window?"), TEXT("DocViewBoxy"), MB_OKCANCEL | MB_ICONQUESTION ) == 1 ) { DestroyWindow(); } } afx_msg void OnAbout() { //宣告關於事件 MessageBox( TEXT("DocViewBoxy Version 1.0\nCopyright (C) 2013, By QQBoxy Huang.\nEmail: gs1458@gmail.com"), TEXT("About"), MB_OK ); } DECLARE_DYNCREATE(FrameBoxy) //宣告run-time類別 DECLARE_MESSAGE_MAP() //宣告訊息映射表}; IMPLEMENT_DYNCREATE(FrameBoxy, CFrameWnd) //宣告FrameBoxy為run-time類別 BEGIN_MESSAGE_MAP(FrameBoxy, CFrameWnd) //建立訊息映射表 ON_COMMAND(ID_FILE_EXIT, OnExit) ON_COMMAND(ID_HELP_ABOUT, OnAbout)END_MESSAGE_MAP() class ViewBoxy : public CView {public: void OnDraw(CDC * aDC) { //必須覆寫的虛擬函數 DocBoxy *doc = (DocBoxy *)GetDocument(); ASSERT_VALID(doc); //斷言，確認doc是否存在(在發行版本不會執行) glLoadIdentity(); glClearColor(1.0f, 1.0f, 1.0f, 1.0f); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glTranslatef(0.0f,0.0f,-1.0f); glColor3f(0.0f,0.0f,0.0f); /*glBegin(GL_LINES); glVertex3f(0.0f, 1.0, 0.0f); glVertex3f(-1.0, -1.0, 0.0f); glVertex3f(-1.0f, -1.0, 0.0f); glVertex3f(1.0f, -1.0, 0.0f); glVertex3f(1.0f, -1.0f, 0.0f); glVertex3f(0.0f, 1.0f, 0.0f); glEnd();*/ glBegin(GL_TRIANGLES); glColor3f(1.0f,0.0f,0.0f); //Red glVertex3f( 0.0f, 1.0f, 0.0f); // Top glColor3f(0.0f,1.0f,0.0f); //Green glVertex3f(-1.0f,-1.0f, 0.0f); // Bottom Left glColor3f(0.0f,0.0f,1.0f); //Blue glVertex3f( 1.0f,-1.0f, 0.0f); // Bottom Right glEnd(); glFinish(); //繪圖完畢 SwapBuffers( doc->m_pDC->GetSafeHdc() ); // } BOOL PreCreateWindow(CREATESTRUCT& cs) { cs.style |= WS_CLIPSIBLINGS | WS_CLIPCHILDREN; //加入 WS_CLIPSIBLINGS 及 WS_CLIPCHILDREN 旗標 return CView::PreCreateWindow(cs); //避免OpenGL畫到別的視窗 } BOOL OnEraseBkgnd(CDC* pDC) { return true; //不要重繪視窗 } void OnDestroy() { //清除記憶體 DocBoxy *doc = (DocBoxy *)GetDocument(); HGLRC hRC; hRC= wglGetCurrentContext(); wglMakeCurrent(NULL, NULL); if (doc->hrc) wglDeleteContext(hRC); if (doc->m_pDC) delete doc->m_pDC; CView::OnDestroy(); } bool bSetupPixelFormat() { DocBoxy *doc = (DocBoxy *)GetDocument(); static PIXELFORMATDESCRIPTOR pfd = { sizeof(PIXELFORMATDESCRIPTOR), // 像素的結構大小 1, // 版本號 PFD_DRAW_TO_WINDOW | // 緩衝特性:視窗支援 PFD_SUPPORT_OPENGL | // 緩衝特性:OpenGL支援 PFD_DOUBLEBUFFER, // 緩衝特性:雙精度緩衝 PFD_TYPE_RGBA, // 設定顏色類型為RGBA 24, // 色彩深度:24-bit 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, // accum bits ignored 32, // 深度緩衝:32-bit z-buffer 0, // no stencil buffer 0, // no auxiliary buffer PFD_MAIN_PLANE, // main layer 0, // reserved 0, 0, 0 // layer masks ignored }; int pixelformat; if ( (pixelformat = ChoosePixelFormat(doc->m_pDC->GetSafeHdc(), &pfd)) == 0 ) { MessageBox(_TEXT("ChoosePixelFormat failed")); return false; } if (SetPixelFormat(doc->m_pDC->GetSafeHdc(), pixelformat, &pfd) == false) { MessageBox(_TEXT("SetPixelFormat failed")); return false; } return true; } void init() { int n; DocBoxy *doc = (DocBoxy *)GetDocument(); PIXELFORMATDESCRIPTOR pfd; //宣告一個PixelFormat物件 doc->m_pDC = new CClientDC(this); //建立一個視窗繪圖物件 ASSERT_VALID(doc->m_pDC); //斷言，確認視窗繪圖物件是否存在(在發行版本不會執行) if (!bSetupPixelFormat()) return; //設定應用所需的像素格式 n = GetPixelFormat(doc->m_pDC->GetSafeHdc()); //從Windows裡找尋符合我們設定的 DescribePixelFormat(doc->m_pDC->GetSafeHdc(), n, sizeof(pfd), &pfd); //PixelFormat的索引值，並將之指定給pfd doc->hrc = wglCreateContext(doc->m_pDC->GetSafeHdc()); //將RC物件給DC物件 wglMakeCurrent(doc->m_pDC->GetSafeHdc(), doc->hrc); //讓這個RC設定為作用中的物件 glDepthFunc(GL_GREATER); //深度資訊 glEnable(GL_DEPTH_TEST); //深度測試 glClearDepth(-2.0f); //初始化深度 glClearColor(1.0f, 1.0f, 1.0f, 1.0f); //初始化顏色 //PixelFormat:視窗的所有3D特徵設定,包括緩衝區、 顏色深度等集合的名稱 //RC:背景渲染,OpenGL裡負責紀錄目前顏色,狀態設定等資訊的物件 } int OnCreate(LPCREATESTRUCT lpCreateStruct) { if(CView::OnCreate(lpCreateStruct) == -1) { //判斷視窗生成 return -1; } init(); return 0; } void OnSize(UINT nType, int cx, int cy) { CView::OnSize(nType, cx, cy); GLfloat nRange = 5.0f; //比例係數 if(cy == 0) { //防止分母為零 cy = 1; } glMatrixMode(GL_PROJECTION); //透視場景 glLoadIdentity(); //重新設定矩陣 if (cx <= cy) { //調整視窗比例 glOrtho(-nRange, nRange, -nRange*cy/cx, nRange*cy/cx, -nRange, nRange); } else { glOrtho(-nRange*cx/cy, nRange*cx/cy, -nRange, nRange, -nRange, nRange); } glMatrixMode(GL_MODELVIEW); //重新設定觀點矩陣 glViewport(0, 0, cx, cy); //設定觀點 } DECLARE_DYNCREATE(ViewBoxy) //宣告run-time類別 DECLARE_MESSAGE_MAP() //宣告訊息映射表}; IMPLEMENT_DYNCREATE(ViewBoxy, CView) //宣告ViewBoxy為run-time類別 BEGIN_MESSAGE_MAP(ViewBoxy, CView) //建立訊息映射表 ON_WM_DESTROY() ON_WM_CREATE() ON_WM_SIZE() //ON_WM_KEYDOWN() //ON_WM_LBUTTONDOWN()END_MESSAGE_MAP() class AppBoxy : public CWinApp{public: BOOL InitInstance() { CDocument *doc; //宣告指向文件的指標 CSingleDocTemplate* DocTemplate; //宣告指向單文件樣版物件的指標 DocTemplate = new CSingleDocTemplate( //建立具有單文件樣版物件 IDR_MENU, //用於單文件框架之資源的識別子 RUNTIME_CLASS(DocBoxy), //單文件視窗的Document RUNTIME_CLASS(FrameBoxy), //單文件視窗的視窗框架 RUNTIME_CLASS(ViewBoxy) //單文件視窗的View ); AddDocTemplate(DocTemplate); //將單文件樣版物件設定給MyApp doc = DocTemplate->CreateNewDocument(); //建立新的文件 m_pMainWnd = DocTemplate->CreateNewFrame( doc, NULL ); //建立一個視窗框架 DocTemplate->InitialUpdateFrame ( (CFrameWnd*)m_pMainWnd, doc ); //起始化視窗框架物件，並連結View物件 m_pMainWnd->ShowWindow(SW_SHOW); //顯示視窗 return true; }}; AppBoxy appboxy; //建立應用程式物件 |
說明：
基礎MFC使用OpenGL繪製面。
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