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104 lines
3.0 KiB
104 lines
3.0 KiB
#include <windows.h>
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#include <gl/GL.h>
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#include <stdio.h>
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#pragma comment(lib,"opengl32.lib")
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/**
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* @hwnd 发起消息的窗口
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* @msg 消息类型
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*/
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LRESULT CALLBACK GLWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
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switch (msg) {
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case WM_CLOSE:
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PostQuitMessage(0);
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return 0;
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}
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return DefWindowProc(hwnd, msg, wParam, lParam);//其他消息调用window默认处理函数
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}
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/**
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* @hinstance 本应用程序启动实例
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* @hPrevInstance 上一次应用程式的实例
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* @IpCmdLine 命令行的参数
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* @ShowCmd 怎么显示窗口
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*/
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INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
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{
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/*注册窗口*/
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WNDCLASSEX wndclass;
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wndclass.cbClsExtra = 0; //窗口类型的额外空间，这里不需要
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wndclass.cbSize = sizeof(WNDCLASSEX); //窗口实际占用的内存
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wndclass.cbWndExtra = 0; //窗口的额外空间，这里不需要
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wndclass.hbrBackground = NULL; //窗口背景
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wndclass.hCursor = LoadCursor(NULL, IDC_ARROW); //定义鼠标类型
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wndclass.hIcon = NULL; //应用程序exe文件显示图标
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wndclass.hIconSm = NULL; //应用程序运行时左上角图标
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wndclass.hInstance = hinstance; //本应用程序实例
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wndclass.lpfnWndProc = GLWindowProc; //如果用户操作了窗口，本函数会被调用
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wndclass.lpszClassName = L"GLWindow";//窗口名称
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wndclass.lpszMenuName = NULL;//菜单名称
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wndclass.style = CS_VREDRAW | CS_HREDRAW;//窗口更新时的重绘方式，这里使用垂直重绘和水平重绘
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ATOM atom = RegisterClassEx(&wndclass);
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if (!atom) {
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MessageBox(NULL, L"Register failed", L"Error", MB_OK);
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return 0;
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}
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/*创建窗口*/
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//调整窗口大小
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RECT rect;
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rect.left = 0;
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rect.right = 800;
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rect.top = 0;
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rect.bottom = 600;
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AdjustWindowRect(&rect, WS_EX_OVERLAPPEDWINDOW, NULL);
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int windowWidth = rect.right - rect.left;
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int windowHeight = rect.bottom - rect.top;
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//窗口名称一定要和刚才注册窗口的保持一致
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HWND hwnd = CreateWindowEx(NULL, L"GLWindow", L"OpenGL Window", WS_OVERLAPPEDWINDOW, 100, 100, windowWidth, windowHeight, NULL, NULL, hinstance, NULL);
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//设置渲染环境
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HDC dc = GetDC(hwnd);//获取设备上下文
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PIXELFORMATDESCRIPTOR pfd;
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memset(&pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
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pfd.nVersion = 1;
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pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
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pfd.cColorBits = 32; //颜色缓冲区每个像素为32比特4通道RGBA
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pfd.cDepthBits = 24; //深度缓冲区每个像素大小，24比特表示一个浮点数
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pfd.cStencilBits = 8; //蒙板缓冲区每像素为8比特
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pfd.iPixelType = PFD_TYPE_RGBA; //设置像素类型为RGBA
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER; //表示像素最后输出到窗口
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//设置像素格式
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int pixelFormat = ChoosePixelFormat(dc, &pfd);
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SetPixelFormat(dc, pixelFormat, &pfd);
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//创建OpenGL渲染环境
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HGLRC rc = wglCreateContext(dc);
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wglMakeCurrent(dc, rc);//设置OpenGL渲染环境生效
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glClearColor(1.0f, 1.0f, 0.0f, 1.0f);
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/*显示窗口*/
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ShowWindow(hwnd, SW_SHOW);
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UpdateWindow(hwnd);
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/*监听并处理用户请求*/
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MSG msg;
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while (true) {
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if (PeekMessage(&msg, NULL, NULL, NULL, PM_REMOVE)) {
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if (msg.message == WM_QUIT) {
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break;
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}
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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glClear(GL_COLOR_BUFFER_BIT);
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SwapBuffers(dc);
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}
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return 0;
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}
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