How can I learn a multitouch screen's communication protocol and write a C# application for it?

Posted by puri on Stack Overflow See other posts from Stack Overflow or by puri
Published on 2010-02-09T07:54:05Z Indexed on 2010/03/21 17:31 UTC
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Filed under:

multitouch

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windows-7

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c#

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windows-messages

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google-earth

I have got a monitor with multitouch overlay on top of it. It works fine with Windows 7 but I want to write a multitouch application in C# for Windows XP which doesn't support touch feature out of the box. There is no documentation whatsoever and I emailed the manufacturer but never got a reply.

However the device works with Google Earth, which doesn't natively support multitouch, on Windows XP. So I think it generates many types of messages together i.e. WM_TOUCH for Windows 7, one for Google Earth COM API, and probably its own messages either in UDP or Windows message form. How can I trap all communications and learn the protocol?

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