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#include <gtk/gtk.h>
void hello(GtkWidget *window, gpointer data){
g_print("Hello world\n");
}
gint delete_event(GtkWidget *widget, GdkEvent *event, gpointer data){
g_print("delete event occurred\n");
return TRUE;
}
void destroy(GtkWidget *window, gpointer data){
gtk_main_quit();
}
int main(int argc,char *argv[]){
GtkWidget *window;
GtkWidget *button;
gtk_init(&argc,&argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(G_OBJECT(window), "delete_event", G_CALLBACK(delete_event), NULL);
g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy), NULL);
gtk_container_set_border_width(GTK_CONTAINER(window), 10);
button=gtk_button_new_with_label("HELLO World");
g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(hello), NULL);
g_signal_connect_swapped(G_OBJECT(button), "clicked", G_CALLBACK(gtk_widget_destroy), window);
gtk_container_add(GTK_CONTAINER(window), button);
gtk_widget_show(button);
gtk_widget_show(window);
gtk_main();
return 0;
}
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