Programmatic screencapture on mobile device

Question

I would like to implement some sort of remote assistance tool (like vnc) for Android. Is there the possibility to capture a screen programmatically on the device?

Answer 1

The VNC-type remote tol does exist for "SOME" android devices (mainly Samsung):
TeamViewer QuickSupport
https://play.google.com/store/apps/details?id=com.teamviewer.quicksupport.market
Dos anyone knows how that tool gets screen capturing, and why it supports only limited set of devices?