Checking for the possibility on this idea..

[Mina]

Hey' hope all is well

Can the project's window border be shown and/or hidden during runtime?
Hope i made sense there..

[Worm]

Yes it can, you could use API, but the easier way would be to use Window.SetMask to mask out the borders.

Something like this:

Window.SetMask(Application.GetWndHandle(), "Autoplay\\Images\\BorderMask.jpg")