59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
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/* Entry/Undo and Redo
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*
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* GtkEntry can provide basic Undo/Redo support using standard keyboard
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* accelerators such as Control+z to undo and Control+Shift+z to redo.
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* Additionally, Control+y can be used to redo.
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*
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* Use gtk_entry_set_enable_undo() to enable undo/redo support.
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*/
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#include <glib/gi18n.h>
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#include <gtk/gtk.h>
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GtkWidget *
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do_entry_undo (GtkWidget *do_widget)
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{
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static GtkWidget *window = NULL;
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GtkWidget *vbox;
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GtkWidget *label;
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GtkWidget *entry;
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if (!window)
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{
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window = gtk_window_new ();
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gtk_window_set_display (GTK_WINDOW (window),
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gtk_widget_get_display (do_widget));
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gtk_window_set_title (GTK_WINDOW (window), "Undo and Redo");
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gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
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gtk_widget_set_margin_start (vbox, 18);
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gtk_widget_set_margin_end (vbox, 18);
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gtk_widget_set_margin_top (vbox, 18);
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gtk_widget_set_margin_bottom (vbox, 18);
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gtk_window_set_child (GTK_WINDOW (window), vbox);
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label = gtk_label_new (NULL);
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gtk_label_set_markup (GTK_LABEL (label),
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"Use Control+z or Control+Shift+z to undo or redo changes");
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gtk_box_append (GTK_BOX (vbox), label);
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/* Create our entry */
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entry = gtk_entry_new ();
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gtk_editable_set_enable_undo (GTK_EDITABLE (entry), TRUE);
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gtk_box_append (GTK_BOX (vbox), entry);
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gtk_accessible_update_relation (GTK_ACCESSIBLE (entry),
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GTK_ACCESSIBLE_RELATION_LABELLED_BY, label, NULL,
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-1);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_set_visible (window, TRUE);
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else
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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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