private void HandlePintaCoreActionsFileOpenActivated(object sender, EventArgs e)
{
Gtk.FileChooserDialog fcd = new Gtk.FileChooserDialog ("Open Image File", PintaCore.Chrome.MainWindow, FileChooserAction.Open, Gtk.Stock.Cancel, Gtk.ResponseType.Cancel, Gtk.Stock.Open, Gtk.ResponseType.Ok);
int response = fcd.Run ();
if (response == (int)Gtk.ResponseType.Ok)
OpenFile (fcd.Filename);
fcd.Destroy ();
}