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Posted 9 Aug 2010


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Smart Hotkey Handler .NET

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4.45/5 (15 votes)
9 Aug 2010CPOL2 min read
Tutorial about Smart Hot Key Handler .NET control library


Basically hot keys provide quick access to a feature of software application by pressing finite set of one or more keys. These keys will work even when the specific application is inactive or hidden. Normally implementing hot-keys feature for an application is a complex process. I want to make it simple and it is needed for one of my projects. After spending some time with MSDN, I created the Smart Hot key Handler in C#.NET. It will very useful for .NET based windows application developers; they can use it even they don't have any knowledge on Win32 application and libraries.

Using the Smart Hot Key Handler

Smart Hotkey handler.NET allows Windows applications to subscribe all registered hotkey events with minimum efforts. It supports to register all normal keys and function keys as hot key with or without key modifiers (Alt, Shift, Control and Windows).

You can get the full source code of this handler here.

Follow the steps given below to use the smart hot key handler in a test application.

  1. Create a new Windows Application from Visual Studio 2008.
  2. Add Smart Hot key control to Toolbox (if not available), then drag and drop on to your form.
  3. Open your form code file and add the following line of code at the constructor of the form.
    this.hotKey1.HotKeyPressed += 
    	new SmartHotKey.HotKey.HotKeyEventHandler(hotKey1_HotKeyPressed); 
  4. Add the hot key press event handler.
    void hotKey1_HotKeyPressed(object sender, SmartHotKey.HotKeyEventArgs e)
  5. Register all required hot-keys.
    //normal keys
    //normal keys with keymodifiers
    //function keys
    //function keys with keymodifiers
    //other keys[Home,End,PageDown,PageUp and Delete]
  6. Add the following line of code inside of the Dispose method to release the hot key handler.
    //remove all keys
    //remove the specific hot key
    this.hotKey1.RemoveKey("Shift+End"); //you can call this method 
    				//wherever you want to remove a hotkey.
    		//It will release the hotkey handler from your application.
  7. Now you run and test your application, you can get the following messages when you hit one or more keys on your keyboard.

Sample Outputs






In the same way, you can customize the hot key combination based on your requirements.


I hope this will reduce your development time on hot key implementation for your application. Currently Windows key modifier combination hot-keys are not working properly. If you have any workaround or solution, please share with me.

This is my first article, so I look forward to getting your feedback on grammatical and technical mistakes. It will really help me to improve myself and write more useful articles.


  • 9th August, 2010: Initial post


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


About the Author

Architect FE
India India
No Biography provided

Comments and Discussions

QuestionAn issue found Pin
Member 130031381-Dec-21 18:57
MemberMember 130031381-Dec-21 18:57 
Questionhot key block key everywhere Pin
Predator7519-Sep-19 23:38
professionalPredator7519-Sep-19 23:38 
QuestionVery well Pin
Yves30-Jan-18 5:31
MemberYves30-Jan-18 5:31 
QuestionQuick Help guide for this tool Pin
Willy Kimura7-Aug-15 0:38
professionalWilly Kimura7-Aug-15 0:38 
AnswerRe: Quick Help guide for this tool Pin
techbird10-Aug-15 2:34
Membertechbird10-Aug-15 2:34 
GeneralRe: Quick Help guide for this tool Pin
Willy Kimura22-Aug-15 10:49
professionalWilly Kimura22-Aug-15 10:49 
Questionvery nice Pin
expert-programmer15-Nov-13 7:57
Memberexpert-programmer15-Nov-13 7:57 
Questionhow to use space and arrow key Pin
Hitesh Rohilla23-Jun-13 6:42
professionalHitesh Rohilla23-Jun-13 6:42 
QuestionCan't we ? Pin
Tarek Elqusi7-Jan-13 0:45
professionalTarek Elqusi7-Jan-13 0:45 
AnswerRe: Can't we ? Pin
SpriteFUN17-Mar-18 2:54
MemberSpriteFUN17-Mar-18 2:54 
QuestionF12 is not Working Pin
luckyaruns3-Feb-12 3:49
Memberluckyaruns3-Feb-12 3:49 
QuestionNOt able to register F12 Pin
luckyaruns24-Jan-12 2:45
Memberluckyaruns24-Jan-12 2:45 
GeneralMy vote of 5 Pin
matadur18-Oct-10 9:05
Membermatadur18-Oct-10 9:05 
GeneralNice Pin
L Viljoen11-Aug-10 22:41
professionalL Viljoen11-Aug-10 22:41 
QuestionWindows? Pin
Christ Kennedy10-Aug-10 11:24
mvaChrist Kennedy10-Aug-10 11:24 
AnswerRe: Windows? Pin
techbird11-Aug-10 6:49
Membertechbird11-Aug-10 6:49 
AnswerRe: Windows? Pin
L Viljoen11-Aug-10 22:43
professionalL Viljoen11-Aug-10 22:43 
AnswerRe: Windows? Pin
techbird12-Aug-10 20:55
Membertechbird12-Aug-10 20:55 
GeneralRe: Windows? Pin
Christ Kennedy13-Aug-10 2:54
mvaChrist Kennedy13-Aug-10 2:54 
GeneralRe: Windows? Pin
techbird17-Aug-10 6:48
Membertechbird17-Aug-10 6:48 
AnswerRe: Windows? Pin
Willy Kimura7-Aug-15 0:05
professionalWilly Kimura7-Aug-15 0:05 
GeneralVery Useful Pin
ScruffyDuck10-Aug-10 10:20
MemberScruffyDuck10-Aug-10 10:20 
QuestionWhat's about global hot keys? Pin
tarasn9-Aug-10 21:15
Membertarasn9-Aug-10 21:15 
AnswerRe: What's about global hot keys? Pin
techbird10-Aug-10 8:03
Membertechbird10-Aug-10 8:03 
GeneralRe: What's about global hot keys? Pin
tarasn10-Aug-10 10:53
Membertarasn10-Aug-10 10:53 

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