ScriptGUI.GUI.UIWidget.SetEventKeyLostFocus C# (CSharp) Method

            public static ExecuteResult SetEventKeyLostFocus(FString layout_name, FString widget_name, Event.SenderFStringFString func, EventControl control)
            {
                Widget widget = null;
                ExecuteResult ret = FindWidget(layout_name, widget_name, out widget);
                if (ExecuteResult.Success == ret)
                {

                    switch (control)
                    {
                        case EventControl.Add:
                            {
                                widget.EventKeyLostFocus += func;
                            }
                            break;
                        case EventControl.Remove:
                            {
                                widget.EventKeyLostFocus -= func;
                            }
                            break;
                    }
                }
                return ret;
            }