How to get the process name in C++

Question

How do I get the process name from a PID using C++ in Windows?

Answer 1

Try this function :

std::wstring GetProcName(DWORD aPid)
{ 
 PROCESSENTRY32 processInfo;
    processInfo.dwSize = sizeof(processInfo);
    HANDLE processesSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
    if (processesSnapshot == INVALID_HANDLE_VALUE)
    {
      std::wcout  << "can't get a process snapshot ";
      return 0;
    }

    for(BOOL bok =Process32First(processesSnapshot, &processInfo);bok;  bok = Process32Next(processesSnapshot, &processInfo))
    {
        if( aPid == processInfo.th32ProcessID)
        {
            std::wcout << "found running process: " << processInfo.szExeFile;
            CloseHandle(processesSnapshot);
            return processInfo.szExeFile;
        }

    }
    std::wcout << "no process with given pid" << aPid;
    CloseHandle(processesSnapshot);
    return std::wstring();
}