How to recognize what form's element you click in datasheet view

I like using datasheets as subforms, but Access does not offer datasheet-specific events and properties to automate it. Here 2 cool samples from Krzysztof Naworyta and Krzysztof Pozorek, Access MVPs from Poland, which help to make datasheet more friendly.

How to recognize what form's element you click in datasheet view: column, record selector and so on

New events in datasheet view and Which column I’ve just clicked

Both samples in Polish, but VBA still in English.