Re: [Libusb-win32-devel] =?iso-8859-15?q?How_to_spy_for_mouse_data_?= =?iso-8859-15?q?=3F_=28noob_developer=29?=

[Stephan M. <ste...@we...>]

What you're trying to do won't work, at least not with libusb. 
libusb is not a USB filter or USB monitor. It's not possible to extract
data packets from a mouse's or any other device's data stream.

Take a look at Microsofts RawInput API, maybe this works:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/userinput/rawinput.asp


Stephan



> Hello,
> what is the correct way to spy mouse data with libusb under WindowsXP?
> 
> I have found some code snippets here, but unfortunately all of them are
> DOS applications and not work:
> here is a code snippet form this newsgroup here:
> 
> Pseudocode:
> MyThread()
> {
> usb_set_configuration(usbptr,1);
> usb_claim_interface(usbptr,0);
> usb_set_altinterface(usbptr,0);
> while(bRun==1)
> {
> usb_bulk_read(usbptr, 0x81, tmp, sizeof(tmp),20);
> if(tmp & testvalue)
> DoSomething();
> }
> }
> when I put this in a separate thread the system, or better the mouse
> driver, freeze.
> But I want dedect only that one of the mouse button was pressed (this
> are additional mouse buttons, therefore WIN-API not work), but all the
> data should be forwarded to the original mouse driver and should not
> catch and lost from my application.
> 
> Can someone tell me this secret or have some example links for this?
> 
> Thanks and regards
> Peter
> 
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