Re: [Libusb-win32-devel] Trying to port libdjconsole: usb_claim_interface gives a return code -22, what does this mean?

[Xiaofan C. <xia...@gm...>]

On 4/10/07, Xiaofan Chen <xia...@gm...> wrote:
> On 4/9/07, Stephan Meyer <ste...@we...> wrote:
> >
> > This is most likely cause by the fact that you have installed
> > libusb's kernel driver as a filter. This doesn't work properly with
> > some HID devices.
> >
> > Uninstall the filter and install the kernel driver as a normal device
> > driver through an .inf file (use inf-wizard.exe to create one).
> >
> > It should work then.
>
> The thing is that you need to uninstall the kernel HID driver and
> use the libusb-win32 device driver for this kind of HID device. This
> significantly reduces the usability of libusb-win32 for HID device
> under Windows. Yet many USB device disguise them as HID device
> just to avoid writing a device driver.
>
> Just wondering if it is possible to use an alternative backend
> (Windows HID apli) and make libusb a wrapper on top of it.
> I understand then it should perhaps be called libhid-win32 then.
>
> By the way, will the new WinUSB based libusb-win32 solve this
> issue?
>

The nice thing about filter driver is that it is for "all" device and
you can still use the existing vendor driver and vendor application
with the libusb-win32 application. And sometimes it is a bit difficult
to uninstall the Windows driver.