Basic Linux Gtk App

Language: Silver, Platform: Island, Category: GUI
https://github.com/remobjects/ElementsSamples/tree/master/Silver/Island/GUI/Basic Linux Gtk App

• BasicGtkApp
  • References
    • atk
    • cairo
    • gc
    • gdk
    • glib
    • gtk
    • Island
    • pango
    • rtl
    • Swift
  • Source Files
    • Program.swift
  • Other Files

Program.swift

// based on https://developer.gnome.org/gtk3/stable/gtk-getting-started.html

import atk
import gobject
import gio
import gtk

/*
  !!! Please note: in order to run this sample, you need to manually copy it to a Linux PC or VM with an active GUI, and run it.
  !!!
  !!! GUI applications cannot be run via SSH or CrossBox 2, and they are also not supported on "Bash on Windows".
*/

class Program {

	static var window: UnsafePointer<GtkWindow>

	static func clicked(_ app: UnsafePointer<GtkApplication>, _ userdata: UnsafePointer<Void>) {
		let dialog = (gtk_message_dialog_new(nil,
											 GtkDialogFlags.GTK_DIALOG_DESTROY_WITH_PARENT,
											 GtkMessageType.GTK_MESSAGE_INFO,
											 GtkButtonsType.GTK_BUTTONS_OK,
											 "Hello World!")) as! UnsafePointer<GtkDialog>
		gtk_dialog_run(dialog)
		gtk_widget_destroy(dialog)
	}

	static func activate(_ app: UnsafePointer<GtkApplication>, _ userdata: UnsafePointer<Void>) {
		window = gtk_application_window_new(app) as! UnsafePointer<GtkWindow>
		gtk_window_set_title(window, "RemObjects Elements - Island GTK Sample")
		gtk_window_set_default_size(window, 200, 200)

		var button_box = gtk_button_box_new(GtkOrientation.GTK_ORIENTATION_HORIZONTAL)
		gtk_container_add(window, button_box)

		var button = gtk_button_new_with_label("Hello World")
		g_signal_connect_data(button as! glib.gpointer, "clicked", (clicked as! UnsafePointer<Void>) as! glib.GVoidFunc, nil, nil, 0 as! GConnectFlags)
		gtk_container_add(button_box as! UnsafePointer<GtkContainer>, button)
		gtk_widget_show_all(window)
	}

	static func Run() -> Int32 {
		var app = gtk_application_new ("org.gtk.example", gio.GApplicationFlags.G_APPLICATION_FLAGS_NONE)
		g_signal_connect_data(app as! glib.gpointer, "activate", (activate as! UnsafePointer<Void>) as! glib.GVoidFunc, nil, nil, 0 as! GConnectFlags)
		var status = g_application_run (app, ExternalCalls.nargs, ExternalCalls.args)
		g_object_unref(app as! glib.gpointer)
		return status
	}
}

return Program.Run()