first_app.md

First App - Hello World!

Info: The Sandbox trait has been dropped on 0.13.1.

The most basic app should have a struct with implementations of an update and view functions. Then, the run function should be called passing the application title, and the update and view functions. Notice that we define the Message as a simple type just to make sure the signature of update and view are correct. Later we'll see more uses for it.

fn main() -> iced::Result {
    iced::run("My App", MyApp::update, MyApp::view)
}

type Message = ();

#[derive(Default)]
struct MyApp;

impl MyApp {
    fn update(&mut self, _message: Message) {}

    fn view(&self) -> iced::Element<Message> {
        "Hello World!".into()
    }
}

➡️ Next: Explanation of App Structure

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