程序代码：

#include<windows.h>

LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wparam,LPARAM lparam)
{
    HDC hdc;
    PAINTSTRUCT ps;
    RECT rect;
    switch (message)
    {
       case WM_CREATE:
      
       return 0;

       case WM_PAINT:
       hdc=BeginPaint (hwnd,&ps);

       GetClientRect (hwnd,&rect);

       DrawText(hdc,TEXT("HELLO,WINDOWS98"),-1,&rect,DT_SINGLELINE | DT_CENTER | DT_VCENTER);
       EndPaint(hwnd,&ps);

       return 0;

       case WM_DESTROY:
            PostQuitMessage (0);
            return 0;

    }

    return DefWindowProc(hwnd,message,wparam,lparam);
}



int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevinstance,PSTR szCmdLine,int iCmdShow)
{
    static TCHAR szAppName[]=TEXT("HELLOWIN");
   
    HWND hwnd;

    MSG msg;

    WNDCLASS wndclass;

    wndclass.style = CS_HREDRAW | CS_VREDRAW;

    wndclass.lpfnWndProc = WndProc;
    wndclass.cbClsExtra =0;
    wndclass.cbWndExtra = 0;
    wndclass.hInstance = hInstance;
    wndclass.hIcon = LoadIcon (NULL,IDI_APPLICATION);
    wndclass.hCursor = LoadCursor (NULL,IDC_ARROW);
    wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
    wndclass.lpszMenuName = NULL;
    wndclass.lpszClassName = szAppName;

    if(!RegisterClass(&wndclass))
    {
        MessageBox(NULL,TEXT("THIS PROGRAM REQURIES Windows NT!"),szAppName,MB_ICONERROR);
        return 0;
    }
    hwnd = CreateWindow(szAppName,TEXT("THE HELLO PROGRAM"),WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);
   
    ShowWindow(hwnd,iCmdShow);
    UpdateWindow(hwnd);

    while(GetMessage(&msg,NULL,0,0))
    {
        TranslateMessage(&msg);
       
    }
    return msg.wParam  ;
}