Function glib::source::fnmut_callback_wrapper

source ยท 
fn fnmut_callback_wrapper(
    func: impl FnOnce() + Send + 'static,
) -> impl FnMut() -> ControlFlow + Send + 'static
Expand description

Transform a generic FnOnce into a closure that can be used as callback in various glib methods

The resulting function can only be called once and will panic otherwise. It will return ControlFlow::Break in order to prevent being called twice.