第一个GTK+程序

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/* compile command:
   gcc -o simple simple.c `pkg-config --libs --cflags gtk+-2.0`
*/

#include <gtk/gtk.h>

int main( int argc, char *argv[])
{
	GtkWidget* window;
	GtkWidget* frame;
	GtkWidget* label;

	gtk_init(&argc, &argv);

	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

	gtk_window_set_title(GTK_WINDOW(window), "Hello World");
	gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);

	frame = gtk_fixed_new();
	gtk_container_add(GTK_CONTAINER(window), frame);
	
	label = gtk_label_new("Hello World");
	gtk_fixed_put(GTK_FIXED(frame), label, 10, 10);
	
	g_signal_connect_swapped(G_OBJECT(window), "destroy",
							 G_CALLBACK(gtk_main_quit), NULL);

	gtk_widget_show_all(window);
	gtk_main();

	return 0;
}