gtk filechooser

void FileChooser(GtkWidget *widget, ChData *data)
{
    GtkWidget *dialog;
    GtkFileChooser *chooser;
    GtkFileChooserAction action;
    gchar *filename;
    gint res;


    action = GTK_FILE_CHOOSER_ACTION_OPEN;

    dialog = gtk_file_chooser_dialog_new("Open File",
                                         GTK_WINDOW(data->MainWindow),
                                         action,
                                         "_Cancel",
                                         GTK_RESPONSE_CANCEL,
                                         "_Open",
                                         GTK_RESPONSE_ACCEPT,
                                         NULL);

    res = gtk_dialog_run(GTK_DIALOG(dialog));
    if (res == GTK_RESPONSE_ACCEPT)
    {
        chooser = GTK_FILE_CHOOSER(dialog);
        gtk_file_chooser_set_select_multiple (chooser, TRUE);
        filename = gtk_file_chooser_get_filename(chooser);

        g_free(filename);
    }

    gtk_widget_destroy(dialog);
}