gtk/demos/gtk-demo/entry_undo.c
2019-11-05 10:27:29 -08:00

53 lines
1.6 KiB
C

/* Entry/Entry Undo
*
* GtkEntry can provide basic Undo/Redo support using standard keyboard
* accelerators such as Primary+z to undo and Primary+Shift+z to redo.
* Additionally, Primary+y can be used to redo.
*
* Use gtk_entry_set_enable_undo() to enable undo/redo support.
*/
#include <glib/gi18n.h>
#include <gtk/gtk.h>
GtkWidget *
do_entry_undo (GtkWidget *do_widget)
{
static GtkWidget *window = NULL;
GtkWidget *vbox;
GtkWidget *label;
GtkWidget *entry;
if (!window)
{
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Entry Undo");
gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);
g_object_set (vbox, "margin", 5, NULL);
gtk_container_add (GTK_CONTAINER (window), vbox);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label),
"Use Primary+z or Primary+Shift+z to undo or redo changes");
gtk_container_add (GTK_CONTAINER (vbox), label);
/* Create our entry */
entry = gtk_entry_new ();
gtk_editable_set_enable_undo (GTK_EDITABLE (entry), TRUE);
gtk_container_add (GTK_CONTAINER (vbox), entry);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_widget_destroy (window);
return window;
}