GtkComboBox and GtkCellRendererSpin

["Audun Halland" <audun circlesend no>]

Hello, I am currently trying to make a GtkComboBox where some of the  
choices in the list have integers associated with them, showing them in a  
column using a GtkCellRendererSpin. Obviously, I want this integer to be  
editable. However (i'm using gtkmm btw), when i associate the renderer  
with the column, which is actually a GtkAdjustment (associating it with  
the property_adjustment in the renderer), nothing is drawn. My first  
thought is that maybe editing cells in a combobox is unsupported by  
design? Do I actually need to use a treeview for something like this?

Any hints are greatly appreciated :)

best regards,
Audun Halland