Detecting system events with the help of C#

[DarenHawk]

Hello,

I have requirement to create a small application that can detect the opening / closing an application on the machine. And must also ensure that it should work fine on the large quantity of data .

I have tried searching for this kind of requirement but unable to find on the internet so i came here, and that requirement is in the C # and I have no idea realization ...

If anyone has any suggestion please let me know.

Thank you in advance

[RichiRich]

According to me Detecting the opening or closing of an application at real time cannot be predict... Against the method by Process.getProcess
allows to know all the processes running, so you are allowed to can call this method regularly (with a timer for example) and can compare the results to see if a process was started or stopped.

To find out which application is active, it must pass through the native Windows functions Invoke by DllImport attribute. I am not sure about exactly what functions because I have to reinstall my PC and I have not yet installed the MSDN doc ...

[DarenHawk]

Ok thank you very much, I understood little about it, but if I will get more information and if i will study myself on this point I hope I would definitely be able to find the appropriate solution on it otherwise you already give me a place to look some more in it,I will consider very good start for me.

[Ackley]

You may also find your little code from here:

GetForegroundWindow This is the method that returns the handle of the active window. You can declare it like this:

  using System. Runtime. InteropServices; 
  ... 

  [DllImport ( "user32.dll")] 
  public static extern IntPtr GetForegroundWindow ();

Then to get the process that owns this window, you can use GetWindowThreadProcessId:

  [DllImport ( "user32.dll")] 
  public static extern long GetWindowThreadProcessId (IntPtr hWnd, ref long lpdwProcessId);