gtk3-hello-world/src/main.rs

   1 use gtk::prelude::*;
   2 use gtk::{
   3     Application, ApplicationWindow,
   4     Button,
   5     Widget,
   6 };
   7
   8 fn build_ui(app: &Application) {
   9     let button = Button::builder()
  10         .label("Click me!")
  11         .margin_top(12)
  12         .margin_bottom(12)
  13         .margin_start(12)
  14         .margin_end(12)
  15         .build();
  16
  17     button.connect_clicked(move |button| {
  18         button.set_label("Hello world!");
  19     });
  20
  21     let button_w: &Widget = button.upcast_ref::<Widget>();
  22
  23     println!("button visible: {}", button_w.is_visible());
  24
  25     let window = ApplicationWindow::builder()
  26         .application(app)
  27         .title("Hello GTK")
  28         .child(&button)
  29         .build();
  30
  31     window.show_all();
  32 }
  33
  34 fn main() {
  35     let app = Application::builder()
  36         .application_id("ork.gtk-rs.example")
  37         .build();
  38
  39     app.connect_activate(build_ui);
  40     app.run();
  41 }