private void RecurUserControl(System.Windows.Forms.UserControl userControl) {
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(userControl.GetType());
ToolTip toolTip = GetToolTip(userControl);
RecurControls(userControl, resources, toolTip);
// addition suggested by Piotr Sielski:
ScanNonControls(userControl, resources);
}