在编写一个Winodw练习题遇到一个问题? 400 报错

在编写一个Winodw练习题遇到一个问题? 400 报错

#include<windows.h>
#include<stdio.h>
LRESULT CALLBACK WindowProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow)
{

 //设计窗口
 WNDCLASS wndclass;
 wndclass.cbClsExtra=0;
 wndclass.cbWndExtra=0;
 wndclass.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);/*HBRBACKGEOUND调用了GETSTOCKOBJECT函数HBRACKGROUND
                  GETSTOCKOBJECT(HBRUSH)类型转换*/
 wndclass.hCursor=LoadCursor(NULL,IDI_APPLICATION);  /*HCURSOR调用LOADCURSOR函数*/
 wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);/*HICON调用了LOADICON函数*/
 wndclass.hInstance=hInstance;
 wndclass.lpfnWndProc=WindowProc;
 wndclass.lpszClassName="WIND";
 wndclass.lpszMenuName=NULL;
 wndclass.style=CS_HREDRAW|CS_VREDRAW;
 RegisterClass(&wndclass);

 //创建窗口，定义一个变量用来保存成功创建窗口后返回的句柄
 HWND hwnd;
 hwnd=CreateWindow("WIND","aa",WS_OVERLAPPEDWINDOW,0,0,400,200,NULL,NULL,hInstance,NULL);//hWndParent,hMenu,不明白的句柄

 //显示刷新窗口
 ShowWindow (hwnd,SW_SHOWNORMAL);
 UpdateWindow(hwnd);

 //定义消息结构
 MSG msg;
 while(GetMessage(&msg,NULL,0,0))
 {
  TranslateMessage(&msg);
        DispatchMessage(&msg);
 }
 return msg.wParam;
}

    //编写窗口过程
LRESULT CALLBACK WindowProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
   switch(uMsg)
   {
    char szChar[20];
    sprintf(szChar,"char code is %d",wParam);
    MessageBox(hwnd,szChar,"char ",0);
    break;
   case WM_LBUTTONDOWN:
    MessageBox(hwnd,"mouse clicked","message",0);
    HDC hdc;
    hdc=GetDC(hwnd);
    TextOut(hdc,0,50,"程序之家",strlen ("程序之家"));
    break;
   case WM_PAINT:
    HDC hDC;
    PAINTSTRUCT ps;
    hDC=BeginPaint(hwnd,&ps);
    TextOut(hDC,0,0,"aa",strlen("aa"));
    EndPaint(hwnd,&ps);
    break;
   case WM_CLOSE:
    if(IDYES==MessageBox(hwnd,"是否真的结束","message",MB_YESNO))
    {
     DestroyWindow(hwnd);
    }
    break;
   case WM_DESTROY:
    PostOuitMessage(0);
    break;

   default:
    return DefWindowProc (hwnd,uMsg,wParam,lParam);

   }
   return 0;
    
  }

我用VC6.0WINDOW窗口调试过程中编译器提示error C2065: 'PostOuitMessage' : undeclared identifier

我改了好多次还是提示这个错误 我用红色字体把错误代码给标记来 还请大牛们指教一下