private void ShowPopup(Gdk.EventButton evnt)
{
Gtk.AccelGroup grp = new Gtk.AccelGroup();
Gtk.Menu menu = new Gtk.Menu();
menu.Show();
menu.AccelGroup = grp;
MenuItem item;
item = new MenuItem("Add");
item.AccelPath = "<CdnStudio>/Widgets/Editors/Properties/Add";
AccelMap.AddEntry("<CdnStudio>/Widgets/Editors/Properties/Add", (uint)Gdk.Key.KP_Add, Gdk.ModifierType.None);
item.Show();
item.Activated += DoAddProperty;
menu.Append(item);
item = new MenuItem("Remove");
item.AccelPath = "<CdnStudio>/Widgets/Editors/Properties/Remove";
item.Show();
AccelMap.AddEntry("<CdnStudio>/Widgets/Editors/Properties/Remove", (uint)Gdk.Key.KP_Subtract, Gdk.ModifierType.None);
item.Sensitive = (d_treeview.Selection.CountSelectedRows() > 0);
item.Activated += DoRemoveProperty;
menu.Append(item);
menu.Popup(null, null, null, evnt.Button, evnt.Time);
}
