vc 中如何把UTF-8的字串转换成ASCII的？

[cnpeople]

谁能提供段代码？谢谢

[masterz]

first convert UTF-8 to widechar, then convert widechar to ANSI.
here is code snippets converting ANSI to UTF-8
CString aaa="ａｂｃ";//CP_ACP CP_UTF8
wchar_t wbuf[128];
ZeroMemory(wbuf,sizeof(wbuf));
int nret=MultiByteToWideChar(CP_ACP,0,aaa,aaa.GetLength()+1,wbuf,sizeof(wbuf)/sizeof(wbuf[0]));
if(nret>0&&nret<sizeof(wbuf))
{
CFile foutput;
foutput.Open("c:\\widechar.htm",CFile::modeCreate|CFile::modeWrite);
foutput.Write(wbuf,nret*2);
foutput.Flush();
foutput.Close();
}
char uft8buf[1024];
BOOL busedefault=false;
nret = WideCharToMultiByte(CP_UTF8,0,wbuf,nret,uft8buf,sizeof(uft8buf),NULL,NULL);
if(nret>0&&nret<sizeof(uft8buf))
{
CFile foutput;
foutput.Open("c:\\utf8.htm",CFile::modeCreate|CFile::modeWrite);
foutput.Write(uft8buf,nret);
foutput.Flush();
foutput.Close();
}