I noticed that the ComboBox can extend beyond the window borders. I'd like to implement something like that for a custom control of mine, but can't figure out how to do it. I know that it happens by simply setting a large enough value via setVisibleRowCount, but what I am interested in is how the combobox manages to be larger than the pane it is in so that I can copy that behaviour for my own control.
Here is a screenshot to clarify what I am talking about.
Thanks in advance