[pwc] still image capture Logitech QuickCam Pro 4000

[Ifi Okoye]

Hi,

Just wondering if theres any code out there that implements "still image
capture" for the Logitech QuickCam Pro 4000.

I know I can do this with opencv at the user level.

But I want to be able to press the button on the webcam and get a separate
window with a still image (not streaming video).

I guess the first question really is: where can I detect that the button on
the webcam has been pressed (...from here on, I can start trying to handle
that trigger).

All ideas are welcome.
--Ifi
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