there is no built-in context menu in 4.3.x.
I see, but the extendedDatatable in version 3.3.3 does?
I don't think I understand, yes there is a context menu in 3.3.x. The main difference is that in RF 4 you cannot group rows and hide columns, sorting is still there.
Well let me explain my question with a picture.
As you can see in the picture, the Extended DataTable in the exadeI livedemo (RF V3.3.x) has a Column Context Menu when hovering over the header. With this menu I can sort, hide, group columns etc. My question was how to "show" the Column Context Menu in the Extended Datatable (RF 4).
There isn't a way to show it, that functionality is not implemented in RF 4. If you want to have something similar to it you'll have to make it yourself using rich:dropDownMenu.