Struct druid::DelegateCtx

pub struct DelegateCtx<'a> { /* private fields */ }

A context passed in to AppDelegate functions.

Implementations

impl<'a> DelegateCtx<'a>

pub fn submit_command(&mut self, command: impl Into<Command>)

Submit a Command to be run after this event is handled.

Commands are run in the order they are submitted; all commands submitted during the handling of an event are executed before the update method is called.

Target::Auto commands will be sent to every window (Target::Global).

pub fn get_external_handle(&self) -> ExtEventSink

Returns an ExtEventSink that can be moved between threads, and can be used to submit commands back to the application.

pub fn new_window<T: Any>(&mut self, desc: WindowDesc<T>)

Create a new window. T must be the application’s root Data type (the type provided to AppLauncher::launch).

Examples found in repository

examples/multiwin.rs (line 163)

    fn command(
        &mut self,
        ctx: &mut DelegateCtx,
        _target: Target,
        cmd: &Command,
        data: &mut State,
        _env: &Env,
    ) -> Handled {
        if cmd.is(sys_cmds::NEW_FILE) {
            let new_win = WindowDesc::new(ui_builder())
                .menu(make_menu)
                .window_size((data.selected as f64 * 100.0 + 300.0, 500.0));
            ctx.new_window(new_win);
            Handled::Yes
        } else {
            Handled::No
        }
    }