string wstring 转换

 

std::string VengFuncConfig::WstringToString(wstring wstr)
{
    string str;
    int len = WideCharToMultiByte(CP_ACP, 0, wstr.c_str(),wstr.length(), NULL, 0, NULL, NULL);
    char *pFileName = new char[len +1];
    WideCharToMultiByte(CP_ACP,0,wstr.c_str(),wstr.length(),pFileName,len,NULL,NULL);
    pFileName[len] = '\0';
    str = pFileName;

    delete []pFileName;
    pFileName = NULL;
    return str;
}


wstring VengFuncConfig::StringToWstring(string str)
{
    int len = MultiByteToWideChar(CP_ACP,0,str.c_str(),str.size(),NULL,0);
    TCHAR *buffer=new TCHAR[len+1];
    MultiByteToWideChar(CP_ACP,0,str.c_str(),str.size(),buffer,len);
    buffer[len]='\0';
    wstring return_value;
    return_value.append(buffer);
    delete []buffer;
    return return_value;
}