Multiple values in once cell of listbox


I wanted to make something to show multiple values in listbox.
First, try to use MenuItem(PopupMenu), it works but it is displayed outside of the Cell.

Is there any way to do that instead of Menuitem?

Try to change the Item on the cellclick-event or the mouseenter-event.
To get the former item back store it in a textfield outside the window and you can use the mouseexit- event, to change it back or another cellclick


Look at this example, you can adapt it for use so that the values ??are loaded from a database

source code

I will go over it for implementing my multiple values in the one cell.