How to render widget inside TreeView cell using GTK #

I am developing an application with Mono and Gtk #. In my application, I need to use the TreeView control. I am looking for a way to render a widget inside a cell rather than drawing everything. I have custom widgets that I would like to use inside these cells and I do not want to draw them by hand.

I looked through the documentation and forums but couldn't find a way to do this. I don't think this is not possible, since CellRendererCombo and CellRendererToggle seem to create a widget.

thank