Detect X button click event on cmd window

Posted on 2010-09-03
Last Modified: 2012-06-27
How do I detect from within a console application when the X button on its cmd window has been clicked?
Question by:gprodri
  • 2
LVL 85

Expert Comment

by:Mike Tomlinson
ID: 33601042
If you need that functionality then you should probably be using a WinForm instead...   =\

Can you give more details?
LVL 14

Expert Comment

by:Daniel Junges
ID: 33601049
SetConsoleCtrlHandler(new HandlerRoutine(ConsoleCloseEvent), true);

private static bool ConsoleCloseEvent(CtrlTypes ctrlType)
            switch (ctrlType)
                case CtrlTypes.CTRL_C_EVENT:
                    isclosing = true;
                    Console.WriteLine("CTRL+C received!");

                case CtrlTypes.CTRL_BREAK_EVENT:
                    isclosing = true;
                    Console.WriteLine("CTRL+BREAK received!");

                case CtrlTypes.CTRL_CLOSE_EVENT:
                    isclosing = true;
                    Console.WriteLine("Program being closed!");

                case CtrlTypes.CTRL_LOGOFF_EVENT:
                case CtrlTypes.CTRL_SHUTDOWN_EVENT:
                    isclosing = true;
                    Console.WriteLine("User is logging off!");
            return true;

        public static extern bool SetConsoleCtrlHandler(HandlerRoutine Handler, bool Add);


        public delegate bool HandlerRoutine(CtrlTypes CtrlType);

        public enum CtrlTypes


            CTRL_C_EVENT = 0,



            CTRL_LOGOFF_EVENT = 5,



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LVL 85

Accepted Solution

Mike Tomlinson earned 500 total points
ID: 33601104
*Not for's a VB implementation of junges's approach:
Imports System.Runtime.InteropServices

Module Module1

    Public isclosing As Boolean = False

    <DllImport("Kernel32")> _

    Public Function SetConsoleCtrlHandler(ByVal Handler As HandlerRoutine, ByVal Add As Boolean) As Boolean

    End Function

    Public Delegate Function HandlerRoutine(ByVal CtrlType As CtrlTypes) As Boolean

    Public Enum CtrlTypes

        CTRL_C_EVENT = 0





    End Enum

    Sub Main()

        SetConsoleCtrlHandler(New HandlerRoutine(AddressOf ConsoleCloseEvent), True)

        While Not isclosing

            ' ...


        End While

    End Sub

    Private Function ConsoleCloseEvent(ByVal ctrlType As CtrlTypes) As Boolean

        Select Case ctrlType

            Case CtrlTypes.CTRL_C_EVENT

                Console.WriteLine("CTRL+C received!")

            Case CtrlTypes.CTRL_BREAK_EVENT

                Console.WriteLine("CTRL+BREAK received!")

            Case CtrlTypes.CTRL_CLOSE_EVENT


                Console.WriteLine("Program being closed!")


                Console.WriteLine("Press Enter to continue...")


            Case CtrlTypes.CTRL_LOGOFF_EVENT, CtrlTypes.CTRL_SHUTDOWN_EVENT

                Console.WriteLine("User is logging off!")

        End Select

        isclosing = True

        Return True

    End Function

End Module

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