void MainWindow_Closed(object sender, EventArgs e)
{
searchHistoryWindow.ForceClose();
searchHistoryWindow = null;
folderHistoryWindow.ForceClose();
folderHistoryWindow = null;
SnarlConnector.RevokeConfig((IntPtr) snarlHandle);
}
/// <summary>
/// Creates instances of the search history windows
/// </summary>
private void createHistoryWindows()
{
searchHistoryWindow = new HistoryPopup(Application.Current.MainWindow.GetType().Assembly.FullName + "." + "searchHistoryWindow");
folderHistoryWindow = new HistoryPopup(Application.Current.MainWindow.GetType().Assembly.FullName + "." + "folderHistoryWindow");
}