How to use Multitouch?

[oUp2Uo]

Thanks for the great work.

I am a newbie to rust and wgpu.
After reading doc, I tried to use multi-touch(has the gesture), easier using than touch, I thought.
But I could not find a event for multi-touch in WindowEvent, only WindowEvent::Touch.

And doc has few instructions about this.
The multitouch demo does not using Window.
https://github.com/emilk/egui/blob/master/crates/egui_demo_lib/src/demo/multi_touch.rs

Do you have any idea or sample about this?

Thank you.