No all devices are listed in HidDeviceFilter() about pywinusb HOT 4 CLOSED

Here's the device as recieved from winapi:
HID device (vID=0x0000, pID=0x0000, v=0x0000); ; , Path: ?\hid#vid_16c0&pid_03ed#6&20aaa91&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
There's VID and PID in path, but vID and pID are zeroes when class instance initialized... No idea where to look further :-(

from pywinusb.

Problem is that winapi fails to create handlers for some devices:

h_hid = int( winapi.CreateFile(device_path,
winapi.GENERIC_READ | winapi.GENERIC_WRITE,
winapi.FILE_SHARE_READ | winapi.FILE_SHARE_WRITE,
None, winapi.OPEN_EXISTING, 0, 0))

Some devices get handler -1 from this function. All the devices that fail are self made and working properly.

from pywinusb.

And if I just change vid to logitech, it works. It fails with vid 0x16c0, but works perfectly with 0x046d

from pywinusb.

Thanks for the info.

Some hints:

• HID system devices won't be allowed to be accessed directly by applications.
• Usually devices acting as input devices as keyboards, mice (not sure if some game controllers) will be restricted by the system.

Try to use other than input devices usage page item in your HID descriptors.

from pywinusb.