gtk4-hello-world/src/main.rs

   1 use gtk::prelude::*;
   2 use gtk::{
   3     Application, ApplicationWindow,
   4     Button
   5 };
   6
   7 fn build_ui(app: &Application) {
   8     let button = Button::builder()
   9         .label("Click me!")
  10         .margin_top(12)
  11         .margin_bottom(12)
  12         .margin_start(12)
  13         .margin_end(12)
  14         .build();
  15
  16     button.connect_clicked(|button| {
  17         button.set_label("Hello world!");
  18     });
  19
  20     let window = ApplicationWindow::builder()
  21         .application(app)
  22         .title("Hello GTK")
  23         .child(&button)
  24         .build();
  25
  26     window.present();
  27 }
  28
  29 fn main() {
  30     let app = Application::builder()
  31         .application_id("ork.gtk-rs.example")
  32         .build();
  33
  34     app.connect_activate(build_ui);
  35     app.run();
  36 }