[Closed] How to get the visible keyframes in the trackbar?

I would like to know if there is a way to get the keyframes currently displayed in the trackbar?

It should have a way to get them, otherwise I will have to navigate through selected objects, collect selected keys from whatever is keyable in that object, etc; all by myself, when the information it’s right in front of me. Not to mention that as what I want to do would have to operate in realtime, this is is going to be very slow if many objects are selected, like in a full rig.

Regards,
Jr.