Card SnapShot from Negative Rect?
hh at hh.on-rev.com
Mon Jun 6 18:11:08 EDT 2016
Yet another option could be:
 Shift each control down and right, so that the negative coords become
and enlarge also the stack size so that the rectangle fits into the stack
window (and hide img X)
 Take your snapshot from the 'shifted' rect to img X.
I use 'export snapshot from rect <rect> of window windowID here and resize
the image if necesary.
 Invert the action from step 1 (and show img X)
This works pretty fast.
Sadly we cannot lock screen for that, so there is some 'flickering' and it
is, contrary to export snapshot from a group, restricted to current
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