Non-static Magnifier Window

[kmcnaught]

The magnifier in Optikey is based on a static screenshot of the requested area. This means you don't get realtime feedback of mouse cursor changes, for example if you are trying to click on the "resize" handles of an app. It would be great if instead the magnification window was a viewport onto the "real" system UI.

This Magnification Sample demonstrates how to do it in C++. I have tested the sample and verified it gives the desired behaviour w.r.t. system cursors etc. There a a bazillion examples of static magnification in WPF and I have not yet found an example that works, so we might need to port / wrap the behaviour in the linked sample.

Worth mentioning #743 - if implemented, this could be done in one of the suggested ways. I've been playing with the builtin Windows magnifier and it's really hard to use in a useful way, especially with eye gaze. I just can't see how the built in options could be usefully used with Optikey so I think this is worth considering.

@annakirkpatrick I think you would have opinions

[kmcnaught]

Looks like PInoke.Magnification would give us access to the appropriate Windows API to port the C++ example to C# if necessary