第一次编译windows程序，就出错了，帮忙看看哈~
#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, // window class name
TEXT ( "The Hello Program "), // window caption
WS_OVERLAPPEDWINDOW, // window style

CW_USEDEFAULT, // initial x position
CW_USEDEFAULT, // initial y position
CW_USEDEFAULT, // initial x size
CW_USEDEFAULT, // initial y size
NULL, // parent window handle
NULL, // window menu handle
hInstance, // program instance handle
NULL) ; // creation parameters

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_CENTER | DT_VCENTER) ;
EndPaint (hwnd, &ps) ;
return 0 ;

case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

错误信息：
Compiling...
user.c
c:\program files\microsoft visual studio\vc98\include\winnt.h(144) : error C2061: syntax error : identifier 'WCHAR '
c:\program files\microsoft visual studio\vc98\include\winnt.h(144) : error C2059: syntax error : '; '
c:\program files\microsoft visual studio\vc98\include\winnt.h(150) : error C2143: syntax error : missing '{ ' before '* '
c:\program files\microsoft visual studio\vc98\include\winnt.h(151) : error C2143: syntax error : missing '{ ' before '* '
c:\program files\microsoft visual studio\vc98\include\winnt.h(152) : error C2143: syntax error : missing '{ ' before '* '

c:\program files\microsoft visual studio\vc98\include\winnt.h(153) : error C2143: syntax error : missing '{ ' before '* '
c:\program files\microsoft visual studio\vc98\include\winnt.h(154) : error C2143: syntax error : missing '{ ' before '* '
c:\program files\microsoft visual studio\vc98\include\winnt.h(156) : error C2143: syntax error : missing '{ ' before '* '
c:\program files\microsoft visual studio\vc98\include\winnt.h(4734) : error C2061: syntax error : identifier 'WCHAR '
c:\program files\microsoft visual studio\vc98\include\winnt.h(4735) : error C2059: syntax error : '} '
c:\program files\microsoft visual studio\vc98\include\winnt.h(4767) : error C2061: syntax error : identifier 'WCHAR '
c:\program files\microsoft visual studio\vc98\include\winnt.h(4768) : error C2059: syntax error : '} '
c:\program files\microsoft visual studio\vc98\include\winnt.h(4774) : error C2061: syntax error : identifier 'WCHAR '
c:\program files\microsoft visual studio\vc98\include\winnt.h(4775) : error C2059: syntax error : '} '
c:\program files\microsoft visual studio\vc98\include\winnt.h(4779) : error C2059: syntax error : '} '
c:\program files\microsoft visual studio\vc98\include\winnt.h(4780) : error C2059: syntax error : '} '
c:\program files\microsoft visual studio\vc98\include\winnt.h(6160) : error C2061: syntax error : identifier 'WCHAR '
c:\program files\microsoft visual studio\vc98\include\winnt.h(6161) : error C2059: syntax error : '} '
c:\program files\microsoft visual studio\vc98\include\winnt.h(6776) : error C2061: syntax error : identifier 'WCHAR '
c:\program files\microsoft visual studio\vc98\include\winnt.h(6779) : error C2059: syntax error : '} '
c:\program files\microsoft visual studio\vc98\include\winbase.h(2) : warning C4182: #include nesting level is 363 deep; possible infinite recursion
c:\program files\microsoft visual studio\vc98\include\winbase.h(2) : fatal error C1076: compiler limit : internal heap limit reached; use /Zm to specify a higher limit
执行 cl.exe 时出错.
Creating command line "bscmake.exe /nologo /o "Debug/user.bsc " ".\Debug\user.sbr " "
Creating browse info file...
BSCMAKE: error BK1506 : cannot open file '.\Debug\user.sbr ': No such file or directory

执行 bscmake.exe 时出错.

[解决办法]
PlaySound
static TCHAR szAppName[] = TEXT ( "HelloWin ") ;

这两个地方都有问题
第一个需要额外的lib
第二个需要定义#define UNICODE