[maemo-developers] Intercept camera slider open event to default camera app? (N900)

[From: Thomas Waelti]

Can anybody tell how an app can intercept the camera slider opening event, so that it does NOT call the default camera app?

This might be handy for my upcoming version of moodlight, which now has a camera-LED-based flashlight mode thanks to the input from RISKÓ Gergely.
It might also benefit all other cam-related apps such as mBarcode from Lardman.

Thanks and happy hacking :-)
-Tom