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A USB HID Component for C#

, 22 Mar 2007 CPOL
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A component to communicate with a USB HID device

Introduction

This article is about a USB HID component which enables you to communicate with HID devices over USB. There is no default component available for USB at this moment, and this component should provide you with a good starting point when writing your own USB HID enabled applications.

This article provides a sample application as well as the component itself.

Background

The component is based on various sources. A good start for USB in C# is this website. Also the book USB COMPLETE (third edition) by Jan Axelson is a must read for anyone wishing to incorporate USB HID into her/his application.

The component is developed during a project at the Avans Hogeschool in 's-Hertogenbosch, The Netherlands.

Using the Code

In the provided sample application, there is a good demonstration on how to include the component. Moreover, the use of the component is very well demonstrated. The only thing that must be done in your own application is implementing the events.

You'll also have to override the following functions in your form, so that your program is USB aware. In the property box, you'll have to provide a vendor and product id of your USB device in order to detect the correct device.

protected override void OnHandleCreated(EventArgs e)
{
base.OnHandleCreated(e);
usb.RegisterHandle(Handle);
}
protected override void WndProc(ref Messagea m)
{
usb.ParseMessages(ref m);
base.WndProc(ref m); // pass message on to base form
}

Points of Interest

A mouse is always in use by Windows, and cannot be captured by your own application. This also applies to HID devices in use by other applications.

History

  • 22nd March, 2007: First version, currently in development

Updates will be posted if there is a need for them.

License

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

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About the Author

wimar
Web Developer
Netherlands Netherlands
No Biography provided

Comments and Discussions

 
GeneralRe: Call CreateFile() failed! Pinmemberwimar16-Aug-07 8:43 
GeneralRe: Call CreateFile() failed! PinmemberMember 368518912-Feb-08 6:34 
GeneralRe: Call CreateFile() failed! Pinmembermichaelrterry10-Aug-07 13:52 
GeneralRe: Call CreateFile() failed! Pinmemberwimar16-Aug-07 8:44 
GeneralRe: Call CreateFile() failed! Pinmembermichaelrterry6-Sep-07 12:33 
GeneralRe: Call CreateFile() failed! PinmemberZ789512316-Jul-09 17:07 
GeneralUSB/HID Pinmembersswcharlie6-Jun-07 14:07 
GeneralRe: USB/HID Pinmemberwimar12-Jun-07 23:02 
GeneralRe: USB/HID Pinmembersswcharlie9-Aug-07 17:06 
QuestionMultiple identical devices? Pinmemberantmason29-May-07 5:59 
AnswerRe: Multiple identical devices? Pinmemberwimar30-May-07 1:09 
Generalcommunicating other than HID Pinmemberardaarda15-May-07 23:10 
GeneralRe: communicating other than HID Pinmemberwimar16-May-07 6:50 
QuestionA problem is observed Pinmembers_stavrev24-Apr-07 6:51 
Hello wimar,
thanks for your article. Smile | :)
I had problem running UsbApp. Once it is started on PC with no specified HID device attached and the OK button is pressed than when the device is attached there is no way to detect it any more. only "Found a Device" message appears. The problem stays until the HID driver is uninstalled and re-installed. I'll try to find any workaround but I afraid my skills are not enough yet Blush | :O
For testing your UsbApp I used a USB sound card which is composite device - it has both HID and Audio interfaces. I tried it on two different PCs but the problem ocures on both of them.

QuestionUSB HID Pinmemberkingdom197713-Apr-07 3:45 
AnswerRe: USB HID Pinmemberwimar15-Apr-07 22:41 
GeneralRe: USB HID Pinmemberkinglaws16-Apr-07 8:12 
GeneralRe: USB HID Pinmemberwimar17-Apr-07 8:52 
GeneralRe: USB HID Pinmemberkinglaws17-Apr-07 9:39 
GeneralRe: USB HID Pinmemberkinglaws19-Apr-07 14:24 
GeneralRe: USB HID PinmemberIwan Budihalim16-Aug-07 3:21 
QuestionDetecting a HID Device [modified] PinmemberBalaVikram29-Mar-07 0:47 
AnswerRe: Detecting a HID Device Pinmemberwimar29-Mar-07 5:06 
GeneralRe: Detecting a HID Device PinmemberBalaVikram1-Apr-07 20:49 

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