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Global System Hooks in .NET

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9 Jan 2005CPOL18 min read 1.1M   49.2K   446  
A class library for using *global* system hooks in .NET.
// /////////////////////////////////////////////////////////////
// File: KeyboardHookExt.cs	Class: Kennedy.ManagedHooks.KeyboardHookExt
// Date: 2/25/2004			Author: Michael Kennedy
// Language: C#				Framework: .NET
//
// Copyright: Copyright (c) Michael Kennedy, 2004-2005
// /////////////////////////////////////////////////////////////
// License: See License.txt file included with application.
// Description: See compiled documentation (Managed Hooks.chm)
// /////////////////////////////////////////////////////////////

using System;

namespace Kennedy.ManagedHooks
{
	/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/Class/*'/>
	public class KeyboardHookExt : KeyboardHook
	{
		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/KeyboardEventHandlerExt/*'/>
		public delegate void KeyboardEventHandlerExt(System.Windows.Forms.Keys key);

		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/KeyDown/*'/>
		public event KeyboardEventHandlerExt KeyDown;
		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/KeyUp/*'/>
		public event KeyboardEventHandlerExt KeyUp;
		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/SystemKeyDown/*'/>
		public event KeyboardEventHandlerExt SystemKeyDown;
		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/SystemKeyUp/*'/>
		public event KeyboardEventHandlerExt SystemKeyUp;

		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/ctor/*'/>
		public KeyboardHookExt()
		{
			this.KeyboardEvent += new KeyboardEventHandler(KeyboardHookExt_KeyboardEvent);
		}

		private void KeyboardHookExt_KeyboardEvent(Kennedy.ManagedHooks.KeyboardEvents kEvent, System.Windows.Forms.Keys key)
		{
			switch (kEvent)
			{
				case KeyboardEvents.KeyDown:
					OnKeyDown(key);
					break;
				case KeyboardEvents.KeyUp:
					OnKeyUp(key);
					break;
				case KeyboardEvents.SystemKeyDown:
					OnSysKeyDown(key);
					break;
				case KeyboardEvents.SystemKeyUp:
					OnSysKeyUp(key);
					break;
			}
		}

		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/OnKeyDown/*'/>
		protected virtual void OnKeyDown(System.Windows.Forms.Keys key)
		{
			Fire_KeyDown(key);
		}

		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/OnKeyUp/*'/>
		protected virtual void OnKeyUp(System.Windows.Forms.Keys key)
		{
			Fire_KeyUp(key);
		}

		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/OnSysKeyDown/*'/>
		protected virtual void OnSysKeyDown(System.Windows.Forms.Keys key)
		{
			Fire_SystemKeyDown(key);
		}

		/// <include file='ManagedHooks.xml' path='Docs/KeyboardHookExt/OnSysKeyUp/*'/>
		protected virtual void OnSysKeyUp(System.Windows.Forms.Keys key)
		{
			Fire_SystemKeyUp(key);
		}

		private void Fire_KeyDown(System.Windows.Forms.Keys key)
		{
			if (KeyDown != null)
			{
				KeyDown(key);
			}
		}

		private void Fire_KeyUp(System.Windows.Forms.Keys key)
		{
			if (KeyUp != null)
			{
				KeyUp(key);
			}
		}

		private void Fire_SystemKeyDown(System.Windows.Forms.Keys key)
		{
			if (SystemKeyDown != null)
			{
				SystemKeyDown(key);
			}
		}

		private void Fire_SystemKeyUp(System.Windows.Forms.Keys key)
		{
			if (SystemKeyUp != null)
			{
				SystemKeyUp(key);
			}
		}

	}
}

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Instructor / Trainer DevelopMentor
United States United States
Michael Kennedy is a founding partner and software engineer at United Binary, LLC (http://www.unitedbinary.com [^]) and he is active in the agile software development community. Michael has been developing software for over 10 years. The last 4 of those years have been solidly focused on .NET development. For more information, please visit his website http://www.michaelckennedy.net [^]

In a previous life, Michael was pursuing a fairly successful career in mathematics before he saw the True Light and chose The Way of Programming.

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