std::string WcharToChar(const wchar_t* wp, size_t m_encode = CP_ACP){    std::string str;    int len = WideCharToMultiByte(m_encode, 0, wp, wcslen(wp), NULL, 0, NULL, NULL);    char    *m_char = new char[len + 1];    WideCharToMultiByte(m_encode, 0, wp, wcslen(wp), m_char, len, NULL, NULL);    m_char[len] = '\0';    str = m_char;    delete m_char;    return str;}DWORD GetProcessIDFromName(char *strProcessName){    HANDLE snapshot;    PROCESSENTRY32 processinfo;    processinfo.dwSize = sizeof(processinfo);    snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);    if (snapshot == NULL)    {        return 0;    }        BOOL status = Process32First(snapshot, &processinfo);    while (status)    {        string str = WcharToChar(processinfo.szExeFile);        if (_stricmp(strProcessName, str.c_str()) == 0)        {            return processinfo.th32ProcessID;        }                    status = Process32Next(snapshot, &processinfo);    }    return 0;}

 

参考：https://www.cnblogs.com/pswzone/archive/2012/07/25/2609115.html