hello_button/
hello_button.rs

1use fltk::{app, button::Button, frame::Frame, prelude::*, window::Window};
2
3fn main() {
4    let app = app::App::default();
5    let mut wind = Window::default().with_size(400, 300);
6    let mut frame = Frame::default().with_size(200, 100).center_of(&wind);
7    let mut but = Button::new(160, 210, 80, 40, "Click me!");
8    wind.end();
9    wind.show();
10
11    but.set_callback(move |_| frame.set_label("Hello world"));
12
13    app.run().unwrap();
14}