SDK编程模板

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#include<Windows.h>   LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPreInstance,LPSTR lpCmdLine,int nShowCmd) {     static TCHAR szAPPName[] = TEXT("MyWindows");     HWND hwnd;     MSG msg;     WNDCLASS wndclass;       wndclass.style = CS_HREDRAW | CS_VREDRAW;     wndclass.hInstance = hInstance;     wndclass.lpfnWndProc = WndProc;     wndclass.cbClsExtra = 0;     wndclass.cbWndExtra = 0;     wndclass.hIcon = LoadIcon(NULL,IDI_APPLICATION);     wndclass.hCursor = LoadCursor(NULL,IDC_ARROW);     wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);     wndclass.lpszClassName = szAPPName;     wndclass.lpszMenuName = NULL;       if(!RegisterClass(&wndclass))     {         MessageBox(NULL,TEXT("这个程序需要在 windows NT 下菜能执行！"),TEXT("错误"),MB_OK | MB_ICONERROR);         return 0;     }       hwnd = CreateWindow(szAPPName,TEXT("Windows编程练习"),WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);       ShowWindow(hwnd,nShowCmd);       UpdateWindow(hwnd);       while(GetMessage(&msg,NULL,0,0))     {         TranslateMessage(&msg);         DispatchMessage(&msg);     }       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);         GetClientRect(hwnd,&rect);         DrawText(hdc,TEXT("This is my first window !"),-1,&rect,DT_VCENTER | DT_CENTER | DT_SINGLELINE);         EndPaint(hwnd,&ps);         return 0;         case WM_DESTROY:         PostQuitMessage(0);         return 0;         default:         return DefWindowProc(hwnd,message,wparam,lparam);       } }