Acrylic window with no-frame: true and background: transparent looks sharp — any way to make it rounded?

[bukkumaaku]

I’m playing around with Slint on Windows and ran into a small issue.
When I set

no-frame: true;
background: transparent;

Is there any way to make it a rounded rectangle instead?
Maybe by tweaking the window shape or applying some clipping mask?

[ogoffart]

There is no feature like that in Slint itself, but maybe you can then get along using [Winit API](TouchArea pointer-event not called when moving mouse above children) or native API through the native handle.