Listen to Click event from external application

Hello,

I am working on a automation project. I want to listen the click event for ANY element from external application.

AutomationEventHandler UIAEventHandler = new AutomationEventHandler(OnUIAEvent);
                    Automation.AddAutomationEventHandler(InvokePattern.InvokedEvent,
                                            AutomationElement.RootElement,
                                            TreeScope.Descendants, UIAEventHandler);

I tried above InvokeEvent, but it is not listening to click events for all elements.

Could you please tell the right method for this purpose?

Thank you in advance!