Created a main window. Woot!

src/main.c

@@ -1,10 +1,68 @@
 #include <stdio.h>
+#include <libintl.h>
+#include <gtk/gtk.h>
+
+#include "config.h"
+
+static void
+quit(GSimpleAction *action, GVariant *parameter, gpointer user_data)
+{
+	GApplication *app = user_data;
+
+	g_application_quit(app);
+}
+
+static void
+startup(GtkApplication *app, gpointer user_data)
+{
+	static const GActionEntry actions[] = {
+		{ "quit", quit }
+	};
+
+	GMenu *menu;
+
+	g_action_map_add_action_entries(G_ACTION_MAP(app), actions, G_N_ELEMENTS(actions), app);
+
+	menu = g_menu_new();
+	g_menu_append(menu, "Quit", "app.quit");
+	gtk_application_set_app_menu(app, G_MENU_MODEL(menu));
+	g_object_unref(menu);
+}
+
+static void
+activate(GtkApplication *app, gpointer user_data)
+{
+	GtkWidget *window;
+	GtkWidget *botlist;
+
+	window = gtk_application_window_new(app);
+	gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
+	gtk_window_set_application(GTK_WINDOW(window), GTK_APPLICATION(app));
+	gtk_window_set_title(GTK_WINDOW(window), "BotCommander");
+
+	botlist = gtk_notebook_new();
+
+	gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(botlist));
+
+	gtk_widget_show_all(window);
+}
 
 int
 main(int argc, char **argv)
 {
-	printf(_("Hello!\n"));
+	GtkApplication *app;
+	int status;
 
-	return 0;
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+
+	app = gtk_application_new("org.botcommander.gtk", G_APPLICATION_FLAGS_NONE);
+	g_signal_connect(app, "startup", G_CALLBACK(startup), NULL);
+	g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
+	status = g_application_run(G_APPLICATION(app), argc, argv);
+	g_object_unref(app);
+
+	return status;
 }