ex22_1.c

linux 高级编程的例子源码,包括了本书上的所有代码

/*filename:ex22_1.c*/
#include <gtk/gtk.h>
gint delete_handle(GtkWidget *widget,gpointer gdata)
{
	g_print("application quitting----\n");
	gtk_main_quit();
	return FALSE;
}

void OnEnter(GtkWidget *widget, GtkWidget *entry)
{
  gchar *entry_text;
  entry_text = gtk_entry_get_text(GTK_ENTRY(entry));
  printf("Entry contents: %s\n", entry_text);
}

void OnEditable (GtkWidget *checkbutton,
				   GtkWidget *entry)
{
  gtk_entry_set_editable(GTK_ENTRY(entry),
			 GTK_TOGGLE_BUTTON(checkbutton)->active);
}

void OnVisibile (GtkWidget *checkbutton,
				   GtkWidget *entry)
{
  gtk_entry_set_visibility(GTK_ENTRY(entry),
			 GTK_TOGGLE_BUTTON(checkbutton)->active);
}

int main (int argc, char *argv[])
{

    GtkWidget *window;
    GtkWidget *vbox, *hbox;
    GtkWidget *entry;
    GtkWidget *button;
    GtkWidget *check;

    gtk_init (&argc, &argv);

    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_widget_set_usize( GTK_WIDGET (window), 200, 100);
    gtk_window_set_title(GTK_WINDOW (window), "Test Entry");
    gtk_signal_connect(GTK_OBJECT (window), "delete_event",
                       (GtkSignalFunc) delete_handle, NULL);

    vbox = gtk_vbox_new (FALSE, 0);
    gtk_container_add (GTK_CONTAINER (window), vbox);
    gtk_widget_show (vbox);

    entry = gtk_entry_new_with_max_length (50);
    gtk_signal_connect(GTK_OBJECT(entry), "activate",
		       GTK_SIGNAL_FUNC(OnEnter),
		       entry);
    gtk_entry_set_text (GTK_ENTRY (entry), "Hello,");
    gtk_entry_append_text (GTK_ENTRY (entry), " GTK");
    gtk_entry_select_region (GTK_ENTRY (entry),
			     0, GTK_ENTRY(entry)->text_length);
    gtk_box_pack_start (GTK_BOX (vbox), entry, TRUE, TRUE, 0);
    gtk_widget_show (entry);

    hbox = gtk_hbox_new (FALSE, 0);
    gtk_container_add (GTK_CONTAINER (vbox), hbox);
    gtk_widget_show (hbox);
                                  
    check = gtk_check_button_new_with_label("Editable");
    gtk_box_pack_start (GTK_BOX (hbox), check, TRUE, TRUE, 0);
    gtk_signal_connect (GTK_OBJECT(check), "toggled",
			GTK_SIGNAL_FUNC(OnEditable), entry);
    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), TRUE);
    gtk_widget_show (check);
    
    check = gtk_check_button_new_with_label("Visible");
    gtk_box_pack_start (GTK_BOX (hbox), check, TRUE, TRUE, 0);
    gtk_signal_connect (GTK_OBJECT(check), "toggled",
			GTK_SIGNAL_FUNC(OnVisibile), entry);
    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), TRUE);
    gtk_widget_show (check);
                                   
    button = gtk_button_new_with_label ("Close");
    gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
			       GTK_SIGNAL_FUNC(delete_handle),NULL);
    gtk_box_pack_start (GTK_BOX (vbox), button, TRUE, TRUE, 0);
    GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
    gtk_widget_grab_default (button);
    gtk_widget_show (button);
    
    gtk_widget_show(window);

    gtk_main();
    return(0);
}