VC++下处理UTF8编码的字符串

void UTF8toANSI(CString &strUTF8)
{
//获取转换为多字节后需要的缓冲区大小，创建多字节缓冲区
UINT nLen = MultiByteToWideChar(CP_UTF8,NULL,strUTF8,-1,NULL,NULL);
WCHAR *wszBuffer = new WCHAR[nLen+1];
nLen = MultiByteToWideChar(CP_UTF8,NULL,strUTF8,-1,wszBuffer,nLen);
wszBuffer[nLen] = 0;

nLen = WideCharToMultiByte(936,NULL,wszBuffer,-1,NULL,NULL,NULL,NULL);
CHAR *szBuffer = new CHAR[nLen+1];
nLen = WideCharToMultiByte(936,NULL,wszBuffer,-1,szBuffer,nLen,NULL,NULL);
szBuffer[nLen] = 0;
strUTF8 = szBuffer;
//清理内存
delete []szBuffer;
delete []wszBuffer;
}
//ANSI转UTF8
void ANSItoUTF8(CString &strAnsi)
{
//获取转换为宽字节后需要的缓冲区大小，创建宽字节缓冲区，936为简体中文GB2312代码页
UINT nLen = MultiByteToWideChar(936,NULL,strAnsi,-1,NULL,NULL);
WCHAR *wszBuffer = new WCHAR[nLen+1];
nLen = MultiByteToWideChar(936,NULL,strAnsi,-1,wszBuffer,nLen);
wszBuffer[nLen] = 0;
//获取转为UTF8多字节后需要的缓冲区大小，创建多字节缓冲区
nLen = WideCharToMultiByte(CP_UTF8,NULL,wszBuffer,-1,NULL,NULL,NULL,NULL);
CHAR *szBuffer = new CHAR[nLen+1];
nLen = WideCharToMultiByte(CP_UTF8,NULL,wszBuffer,-1,szBuffer,nLen,NULL,NULL);
szBuffer[nLen] = 0;
strAnsi = szBuffer;
//内存清理
delete []wszBuffer;
delete []szBuffer;
}

 

来源：oschina

链接：https://my.oschina.net/jingshishengxu/blog/4256844