Interaction with UI

Do you know if there is some built in function to simulate mouse click or slide over an UI ?

If you have any idea that would be amazing! Otherwise I would have to implement some sort of collision detection with buttons.

Thanks,

yes there is, there are in fact an onclick event, on hover event, on press event and a couple more, I am not sure what the code is in c++ (I jsut started using Unreal today) but using blue print it is very easy,
Right click the variabe for the button and add an event from that variable

Yes, I can use these On clic event etc but only with mouse clic.

What I came up to is box collider inside my 3D Actor containing the widget that trigger functions within my UI Widget Blueprint.
This is quit dirty, but it is working