windows编程之自己动手写WinMain函数

来源：互联网发布：领航一号软件下载编辑：程序博客网时间：2024/04/30 12:12

这是我参考msdn和书本自己写的窗口程序，

WinMain函数式所有windows应用程序的入口，类似C语言里的main函数，其功能是：完成一系列的定义及初始化工作，并产生消息循环。消息循环是整个程序运行的核心。

WinMain函数主要实现以下功能：

1.注册窗口类，建立窗口，执行其他必要的初始化的操作；

2.进入消息循环，根据从应用程序消息队列接受的消息，调用相应的处理过程；

3.当消息循环检索到WM_QUIT消息时，终止程序运行。

代码如下：

#include<windows.h>#include<stdio.h>LRESULT CALLBACK WndProc(  HWND hwnd,      // handle to window  UINT uMsg,      // message identifier  WPARAM wParam,  // first message parameter  LPARAM lParam   // second message parameter);int WINAPI WinMain(  HINSTANCE hInstance,      // handle to current instance  HINSTANCE hPrevInstance,  // handle to previous instance  LPSTR lpCmdLine,          // command line  int nCmdShow              // show state){WNDCLASS wndclass;wndclass.cbClsExtra = 0;wndclass.cbWndExtra = 0;wndclass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);wndclass.hInstance = hInstance;wndclass.lpfnWndProc = WndProc;wndclass.lpszClassName = "我的窗口";wndclass.lpszMenuName = NULL;wndclass.style = CS_HREDRAW | CS_VREDRAW;RegisterClass(&wndclass); //注册窗口类HWND hwnd;hwnd = CreateWindow("我的窗口", "窗口", WS_OVERLAPPEDWINDOW, 0, 0, 640, 480, NULL, NULL, hInstance, NULL);ShowWindow(hwnd, SW_SHOWNORMAL);UpdateWindow(hwnd);MSG Msg;while(GetMessage(&Msg, NULL, 0, 0)){TranslateMessage(&Msg);         DispatchMessage(&Msg); }return 0;}LRESULT CALLBACK WndProc(  HWND hwnd,      // handle to window  UINT uMsg,      // message identifier  WPARAM wParam,  // first message parameter  LPARAM lParam   // second message parameter){switch(uMsg){case WM_CHAR:char strChar[20];sprintf(strChar, "char is %d", wParam);MessageBox(hwnd, strChar, "window", MB_OK);break;case WM_LBUTTONDOWN:MessageBox(hwnd, "mouse left-click", "window", MB_OK);HDC hdc;hdc = GetDC(hwnd);TextOut(hdc, 0, 50, "hello mouse left-click", strlen("hello mouse left-click"));ReleaseDC(hwnd, hdc);break;case WM_RBUTTONUP:MessageBox(hwnd, "release mouse", "window", MB_OK);hdc = GetDC(hwnd);TextOut(hdc, 0, 80, "hello release mouse", strlen("hello release mouse"));ReleaseDC(hwnd, hdc);break;case WM_CLOSE:PostQuitMessage(0);break;case WM_DESTROY:DestroyWindow(hwnd);break;default:return DefWindowProc(hwnd, uMsg, wParam, lParam);}return 0;}

总结：

感觉自己动手写窗口是有点难度的，因为写的不多，很多东西没记住，都要自己去查资料。