Function glib::source::timeout_add

pub fn timeout_add<F>(interval: Duration, func: F) -> SourceId where
    F: FnMut() -> Continue + Send + 'static, 

Adds a closure to be called by the default main loop at regular intervals with millisecond granularity.

func will be called repeatedly every interval milliseconds until it returns Continue(false). Precise timing is not guaranteed, the timeout may be delayed by other events. Prefer timeout_add_seconds when millisecond precision is not necessary.

The default main loop almost always is the main loop of the main thread. Thus, the closure is called on the main thread.