Derive Macro gui_derive::Handleable

#[derive(Handleable)]
{
    // Attributes available to this derive:
    #[gui]
}

Custom derive functionality for the gui::Handleable trait.

Using this macro a default implementation of the gui::Handleable trait can be created. This functionality is mostly used in quick prototyping/testing scenarios, because most custom widgets will also need a custom event handler.

This macro roughly expands to the following code:

impl gui::Handleable<Event> for TestWidget {}