window程序设计笔记 我的第一个程序详解

#include "windows.h"//window头文件LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);//回调函数int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd ){static TCHAR szappname[]=TEXT("hello word");HWND hwnd;MSG msg;WNDCLASS wndclass;//设计窗口wndclass.cbClsExtra=0;wndclass.cbWndExtra=0; wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);//设置背景颜色 wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);//设置光标wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);//设置图标wndclass.hInstance=hInstance;wndclass.lpfnWndProc=WndProc;//设置回调函数wndclass.lpszClassName=szappname;//设置类名wndclass.lpszMenuName=NULL;//设置菜单名wndclass.style=CS_HREDRAW|CS_VREDRAW;//设置窗口样式是水平重画和垂直重画//注册窗口if (!RegisterClass(&wndclass)){MessageBox(NULL,TEXT("this program is not start!"),szappname,MB_ICONERROR);return 0;} //创建窗口hwnd=CreateWindow(szappname,//类名TEXT("this is my first program"),//窗口名称WS_OVERLAPPEDWINDOW,//窗口样式<==>WS_OVERLAPPED||WS_CAPTION||WS_SYSMENU||WS_THICKFRANE||WS_MINIMIZEBOX||WS_MAXIMIZEBOXCW_USEDEFAULT,//初始化x的位置CW_USEDEFAULT,//初始化y的位置CW_USEDEFAULT,//初始化x的大小CW_USEDEFAULT,//初始化y的大小NULL,//父窗口句柄NULL,//菜单句柄hInstance,//实例句柄NULL//创建的参数);//显示窗口ShowWindow(hwnd,nShowCmd);//更新窗口UpdateWindow(hwnd);while (GetMessage(&msg,NULL,0,0))//从消息队列中取消息{TranslateMessage(&msg);//转译某些键盘消息DispatchMessage(&msg);//将消息发送给窗口消息处理程序}return msg.wParam;}LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wparam,LPARAM lparam){HDC hdc;PAINTSTRUCT ps;RECT rect;switch (message){case WM_PAINT:hdc=BeginPaint(hwnd,&ps);//在BeginPaint和EndPaint之间绘图GetClientRect(hwnd,&rect);DrawText(hdc,TEXT("hello word"),-1,&rect,DT_SINGLELINE|DT_CENTER|DT_VCENTER);EndPaint(hwnd,&ps);return 0;case WM_DESTROY://窗口退出PostQuitMessage(0);return 0;} return DefWindowProc(hwnd,message,wparam,lparam);}