On Saturday 15 March 2008, Héctor Hugo Avilés Arriaga wrote:
> Hello Laurent,
>
> Thanks for the previous tip.
> I'm trying to list the camera controls (Logitech QuickCam Pro 9000) with
> the example:
>
> http://linux-uvc.berlios.de/test.c
>
> Unfortunately, the line:
>
>               query.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
> #endif
>               ret = ioctl(dev, VIDIOC_QUERYCTRL, &query);
>
> returns ret = -1.
>
> :(

As hinted by Richard Atterer, you should try uvcdynctrl. The test application 
I posted is really, well, a test application that I've developed for personal 
use :-)

Best regards,

Laurent Pinchart
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