feat: add gtk

__gui/gtk/src/main.rs

@@ -0,0 +1,27 @@
+use gtk::prelude::*;
+use gio::prelude::*;
+
+use gtk::{Application, ApplicationWindow, Button};
+
+fn main() {
+    let application = Application::new(
+        Some("com.github.gtk-rs.examples.basic"),
+        Default::default(),
+    ).expect("failed to initialize GTK application");
+
+    application.connect_activate(|app| {
+        let window = ApplicationWindow::new(app);
+        window.set_title("First GTK+ Program");
+        window.set_default_size(350, 70);
+
+        let button = Button::with_label("Click me!");
+        button.connect_clicked(|_| {
+            println!("Clicked!");
+        });
+        window.add(&button);
+
+        window.show_all();
+    });
+
+    application.run(&[]);
+}