use gtk4::{ gdk::Display, gio::ApplicationFlags, prelude::*, CssProvider, StyleContext, STYLE_PROVIDER_PRIORITY_APPLICATION, }; fn main() { let application = gtk4::Application::new( Some("com.system76.cosmic.applets.network"), ApplicationFlags::default(), ); application.connect_activate(build_ui); application.run(); } fn build_ui(application: >k4::Application) { let window = gtk4::ApplicationWindow::builder() .application(application) .title("COSMIC Network Applet") .default_width(400) .default_height(600) .build(); }