MFC框架下OpenGL绘图基础例程 自带glut dll

/* An example of the minimal Win32 & OpenGL program. It only works in 16 bit color modes or higher (since it doesn't create a palette). */ #include <windows.h> /* must include this before GL/gl.h */ #include "glew.h" /* OpenGL header file */ #include "glut.h" /* OpenGL utilities header file */ #include <stdio.h> #pragma comment(lib, "glew32.lib") void display() { /* rotate a triangle around */ glEnable(GL_RESCALE_NORMAL); glClear(GL_COLOR_BUFFER_BIT); glBegin(GL_TRIANGLES); glColor3f(1.0f, 0.0f, 0.0f); glVertex2i(0, 1); glColor3f(0.0f, 1.0f, 0.0f); glVertex2i(-1, -1); glColor3f(0.0f, 0.0f, 1.0f); glVertex2i(1, -1); glEnd(); glFlush(); } LONG WINAPI WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { static PAINTSTRUCT ps; switch(uMsg) { case WM_PAINT: display(); BeginPaint(hWnd, &ps); EndPaint(hWnd, &ps); return 0; case WM_SIZE: glViewport(0, 0, LOWORD(lParam), HIWORD(lParam)); PostMessage(hWnd, WM_PAINT, 0, 0); return 0; case WM_CHAR: switch (wParam) { case 27: /* ESC key */ PostQuitMessage(0); break; } return 0; case WM_CLOSE: PostQuitMessage(0); return 0; } return DefWindowProc(hWnd, uMsg, wParam, lParam); } HWND CreateOpenGLWindow(char* title, int x, int y, int width, int height, BYTE type, DWORD flags) { int pf; HDC hDC; HWND hWnd; WNDCLASS wc; PIXELFORMATDESCRIPTOR pfd; static HINSTANCE hInstance = 0; /* only register the window class once - use hInstance as a flag. */ if (!hInstance) { hInstance = GetModuleHandle(NULL); wc.style = CS_OWNDC; wc.lpfnWndProc = (WNDPROC)WindowProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInstance; wc.hIcon = LoadIcon(NULL, IDI_WINLOGO); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.hbrBackground = NULL; wc.lpszMenuName = NULL; wc.lpszClassName = "OpenGL"; if (!RegisterClass(&wc)) { MessageBox(NULL, "RegisterClass() failed: " "Cannot register window class.", "Error", MB_OK); return NULL; } } hWnd = CreateWindow("OpenGL", title, WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS | WS_CLIPCHILDREN, x, y, width, height, NULL, NULL, hInstance, NULL); if (hWnd == NULL) { MessageBox(NULL, "CreateWindow() failed: Cannot create a window.", "Error", MB_OK); return NULL; } hDC = GetDC(hWnd); /* there is no guarantee that the contents of the stack that become the pfd are zeroed, therefore _make sure_ to clear these bits. */ memset(&pfd, 0, sizeof(pfd)); pfd.nSize = sizeof(pfd); pfd.nVersion = 1; pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | flags; pfd.iPixelType = type; pfd.cColorBits = 32; pf = ChoosePixelFormat(hDC, &pfd); if (pf == 0) { MessageBox(NULL, "ChoosePixelFormat() failed: " "Cannot find a suitable pixel format.", "Error", MB_OK); return 0; } if (SetPixelFormat(hDC, pf, &pfd) == FALSE) { MessageBox(NULL, "SetPixelFormat() failed: " "Cannot set format specified.", "Error", MB_OK); return 0; } DescribePixelFormat(hDC, pf, sizeof(PIXELFORMATDESCRIPTOR), &pfd); ReleaseDC(hWnd, hDC); return hWnd; } int APIENTRY WinMain(HINSTANCE hCurrentInst, HINSTANCE hPreviousInst, LPSTR lpszCmdLine, int nCmdShow) { HDC hDC; /* device context */ HGLRC hRC; /* opengl context */ HWND hWnd; /* window */ MSG msg; /* message */ hWnd = CreateOpenGLWindow("minimal", 0, 0, 256, 256, PFD_TYPE_RGBA, 0); if (hWnd == NULL) exit(1); hDC = GetDC(hWnd); hRC = wglCreateContext(hDC); wglMakeCurrent(hDC, hRC); ShowWindow(hWnd, nCmdShow); GLenum err = glewInit(); if (GLEW_OK != err) { MessageBoxA(NULL, "error", "My Window", 1); } while(GetMessage(&msg, hWnd, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } wglMakeCurrent(NULL, NULL); ReleaseDC(hWnd, hDC); wglDeleteContext(hRC); DestroyWindow(hWnd); return msg.wParam; }