[PyQt] Screenshots in linux

[Jake Richards]

Hello:
  Does anyone have any idea how I might select a region of my desktop and
then take a screen grab of it?  The screenshot example shows me how to grab
the snapshot, but the hard part (at least for me) is changing my mouse
cursor to some crosshairs and drawing a region on the desktop that I'd like
to grab.  Can I make a transparent Always On Top window and get mouse clicks
from it?  Anyone done something like this before and have any hints?
Thanks!
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