Hello,

What tecnology can I use to create a window (or anything else capable of
drawing graphics to the screen) with the following caracteristics:

1 - It doesn't appear on screenshots, so it won't capture itself when
capturing a screenshot
2 - It doesn't receive input, and thus mouse clicks go througth it to
the window bellow

I can do that with hardware overlays, but all resources out there about
it are horribly out dated, and it seams to be obsolete now, but I can't
find anything else which allows me to build a screen magnifier.

Any ideas what kind of tecnology would allow that? Maybe the Desktop
Window Manager or something else to do that?

thanks,