What method gets called when top, right corner close button is clicked of a EXE's console window

Question

Hi folks

I have an EXE. It opens an Console window, when it runs. The EXE application contains several objects/references to services, which I want to stop gracefully, if the EXE shuts down or closes. For example, if somebody clicks the close button, on the top, RIGHTcorner of the console window (labled as "X"), the EXE stops. What method gets called, when a user clicks on this Close button ? I ask because If I know such method, I can put in the body of such method, code to stop the any services started by the EXE.

BTW, when my EXE runs the Console Window stays open, becasue i use Console.Readline() as the last code line in the Main method

Also my EXE code is C Sharp

Thank you

 

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diana4

Answer 1

Hi Diana

if i got you right you talk about a console application. If I'm right you might try following:

 

namespace ConsoleApplication1
{
  class Program
  {
    static void Main(string[] args)
    {
      new Program().Run();
    }

    public Program()
    {
      Initialize();
    }

    ~Program()
    {
      Cleanup();
    }

    public void Run()
    {
      // ...
    }

    private void Initialize()
    {
      Native.SetConsoleCtrlHandler(new Native.HandlerRoutine(ConsoleEventHandler), true);
      // additional init code
    }

    private void Cleanup()
    {
      // Insert your cleanup code
      System.Windows.Forms.MessageBox.Show("Closing");
    }

    private bool ConsoleEventHandler(Native.CtrlType ctrlType)
    {
      if (ctrlType == Native.CtrlType.CTRL_CLOSE_EVENT)
      {
        Cleanup();
      }

      return true;
    }
  }
}

And here is the code for 'Native'

using System.Runtime.InteropServices;

namespace ConsoleApplication1
{
  public class Native
  {
    [DllImport("Kernel32")]
    public static extern bool SetConsoleCtrlHandler(HandlerRoutine handler, bool add);

    public delegate bool HandlerRoutine(CtrlType ctrlType);

    public enum CtrlType
    {
      CTRL_C_EVENT = 0,
      CTRL_BREAK_EVENT,
      CTRL_CLOSE_EVENT,
      CTRL_LOGOFF_EVENT = 5,
      CTRL_SHUTDOWN_EVENT
    }
  }
}

Oliver

Answer 2

Hi Oliver, Any references? Thanks 

---

 

diana4

Answer 3

Hi Diana,

 

here's the reference for the 'SetConsoleCtrlHandler'-function
http://msdn.microsoft.com/en-us/library/ms686016(VS.85).aspx

________________________________________

Oliver