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Finding a process

Started by Alkan May 25, 2013 at 3:13 PM 1 replies 1.3k views

Original Post

May 25, 2013 at 3:13 PM

Hello

An application i'm wotking on (C++ on Windows) needs to check if a certain process is running or not. To do that, i use EnumProcesses and OpenProcess to find if the process exists. It works fine if the process i'm looking for is a 32 bits process but if it is a 64 bits process, it can't find it. Is there a solution to that ? The application that looks for the other process is a 32 bits app.

Laval B

May 25, 2013 at 3:23 PM

The problem doesn't come from EnumProcesses but from OpenProcess. Try using the snapshot api.

http://msdn.microsoft.com/en-us/library/windows/desktop/ms686701(v=vs.85).aspx

If all you need to do is to determine if the given process is running or not, you could just write a function like the following :


bool IsProcessRunning3264(LPCTSTR pProcessName)
{
    bool bRetVal        = false;
    HANDLE hSnapshot    = NULL;
    PROCESSENTRY32 pe32 = {0};

    //    Take a snapshot of all processes in the system (including system processes).
    hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);

    if(hSnapshot != INVALID_HANDLE_VALUE)
    {
        pe32.dwSize = sizeof(PROCESSENTRY32);

        //    Retrieve the informations of the first process of the snapshot. 
        if(Process32First(hSnapshot, &pe32))
        {
            do
            {
                CString str(pe32.szExeFile);

                if(str.CompareNoCase(pProcessName) == 0)
                {
                    bRetVal = true;
                    break;
                }

            }while(Process32Next(hSnapshot, &pe32));
        }
        CloseHandle(hSnapshot);
    }
    return bRetVal;
}

Hope this helps.

Alkan

May 25, 2013 at 4:03 PM

Hope this helps.

Yes it works great.

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