#include <gtk/gtk.h> #include <glib/gstdio.h> static void print_hello (GtkWidget *widget, gpointer data) { g_print ("Hello World\n"); } static void quit_cb (GtkWidget *widget, gpointer data) { GtkWindow *window = data; gtk_window_close (window); } static void activate (GtkApplication *app, gpointer user_data) { /* Construct a GtkBuilder instance and load our UI description */ GtkBuilder *builder = gtk_builder_new (); gtk_builder_add_from_file (builder, "builder.ui", NULL); /* Connect signal handlers to the constructed widgets. */ GObject *window = gtk_builder_get_object (builder, "window"); gtk_window_set_application (GTK_WINDOW (window), app); GObject *button = gtk_builder_get_object (builder, "button1"); g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL); button = gtk_builder_get_object (builder, "button2"); g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL); button = gtk_builder_get_object (builder, "quit"); g_signal_connect_swapped (button, "clicked", G_CALLBACK (quit_cb), window); gtk_widget_show (GTK_WIDGET (window)); g_object_unref (builder); } int main (int argc, char *argv[]) { #ifdef GTK_SRCDIR g_chdir (GTK_SRCDIR); #endif GtkApplication *app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE); g_signal_connect (app, "activate", G_CALLBACK (activate), NULL); int status = g_application_run (G_APPLICATION (app), argc, argv); g_object_unref (app); return status; }