请大家帮忙：ERROR LNK2019 编译报错

1>UniReader.obj : error LNK2019: unresolved external symbol __imp__MessageBoxW@16 referenced in function _READER_open@8
1>UniReader.obj : error LNK2019: unresolved external symbol __imp__wsprintfW referenced in function _READER_open@8

#include
#include "stdafx.h"
#include
#include
#include "wintty.h"
#include "Trace.h"
#include "ReaderHandle.h"
#include "UniReader.h"
#include
#include
#include

readerstate= tty_open( portname );
if ( readerstate< 0 )
{

wsprintf(str,_T("错误信息:%s"),GetOpInfo(readerstate));

TRACE_LOG("\tREADER_open: %s open failure. Error code=%d\n", portname, GetLastError() );
MessageBox(NULL,str,L"Error",MB_OK);
af

return -1;
}

部分代码如上，但是会报错，急，希望大家可以帮我解决

是我没调用lib库的问题，已经解决了，谢谢

删除#include 这一行试试