Click here to Skip to main content
Click here to Skip to main content
Add your own
alternative version

Hooking in Microsoft .NET

, 27 Jun 2007
An article discussing hook implementation in .NET
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace HookedAp
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnInstall_Click(object sender, EventArgs e)
        {
            m_oHookManager.HookInvoked += new Win32Hook.HookEventHandler(m_oHookManager_OnHookMessage);
            m_oHookManager.InstallHook();
        }

        void m_oHookManager_OnHookMessage(object sender, HookEventArgs hea)
        {
            if ((QueueStatus)hea.wParam == QueueStatus.PM_REMOVE)
            {
                if (hea.Message.message == 0x100) /*This is a WM_KEYDOWN Message*/
                {
                    char ch = (char)hea.Message.wParam;
                    MessageBox.Show(string.Format("The character {0} caught in hook procedure.", ch));
                }
            }
        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            if (m_oHookManager != null)
            {
                m_oHookManager.UninstallHook();
            }
        }

        private Win32Hook m_oHookManager = new Win32Hook();
    }
}

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

About the Author

sudeesh
Technical Lead
India India
Sudeesh

| Advertise | Privacy | Mobile
Web04 | 2.8.140721.1 | Last Updated 27 Jun 2007
Article Copyright 2007 by sudeesh
Everything else Copyright © CodeProject, 1999-2014
Terms of Service
Layout: fixed | fluid