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I want to use my PSoC5 DVK which registers as a HID device in PC to communicate with MSPaint, and as you know MSPaint in windows7 surport multi-touch function, I want to use this function to test my touch based system, but i don't know how to achieve this testing function. Can you give me some suggestion?
As far as I know, after enumerating as a HID (human interface device) you must generate "Reports" for the actions you want to transmit to your host. As I've seen, windows seems to have lesser problems (or less?) than linux has got. The reports are strongly formatted data structures and are described similar as the USB-device descripion. I've not (yet) found a complete documentation, but a good guess will always be to ask mrs. google for "hid mouse format" which gives a reasonable number of links.
If you are trying to implement multitoouch input and use it on Windows 7. It should be as simple as creating a HID report descriptor. You can create a HID device with Report descriptor as shown in the document that is attached.
As you recommended above, I have created an HID report descriptor in my USB component under the following guidence file released by MS, but when i tranferred message to the MSpaint, MSpaint had no response to those message! and that is i can no nothing about it!