programming windows第三章HELLOWIN编译错误

[stan_uni]

帮忙看看，这个程序错在哪里？
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#include <windows.h>

LRESULT CALLBACK WndProc(HWND,UINT,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 requires 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);
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_CREATE:
PlaySound(TEXT("hellowin.wav"),NULL,SND_FILENAME|SND_ASYNC);
return 0;
case WM_PAINT:
hdc=BeginPaint(hwnd,&ps);

GetClientRect(hwnd,&rect);

DrawText(hdc,TEXT("Hello,Windows 98!"),-1,&rect,DT_SINGLELINE|DT_VCENTER);
EndPaint(hwnd,&ps);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd,message,wParam,lParam);
}
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--------------------Configuration: HELLOWIN - Win32 Debug--------------------
Linking...
HELLOWIN.OBJ : error LNK2001: unresolved external symbol __imp__PlaySoundA@12
Debug/HELLOWIN.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

HELLOWIN.exe - 2 error(s), 0 warning(s)

[Beover1984]

没有根据书上说的引用LIB吧？再仔细看看书

[老夏Max]

Header: Declared in mmsystem.h.
Import Library: Use winmm.lib.

[老夏Max]

需要头文件和Lib库，因为使用了PlaySound！

[pinel]

PlaySound函数没有定义
#include "Mmsystem.h"
引入Library: Winmm.lib.

[fanqing]

PlaySound函数没有定义

#include "Mmsystem.h"
引入Library: Winmm.lib