Function flo_draw::with_2d_graphics

pub fn with_2d_graphics<TAppFn: 'static + Send + FnOnce()>(app_fn: TAppFn)

Steals the current thread to run the UI event loop and calls the application function back to continue execution

This is required because some operating systems (OS X) can’t handle UI events from any thread other than the one that’s created when the app starts. flo_draw will work without this call on operating systems with more robust event handling designs.

This will also ensure that any graphics are displayed until the user closes the window, which may be useful behaviour even on operating systems where the thread takeover is not required.