GtkCellRendererCombo. 
Adjust how text is drawn using object properties. 
Object properties can be set globally (with gObjectSet). 
Also, with GtkTreeViewColumn, you can bind a property to a value 
in a GtkTreeModel. For example, you can bind the "text" property 
on the cell renderer to a string value in the model, thus rendering 
a different string in each row of the GtkTreeView.gtkCellRendererComboNew()GtkCellRenderer] the new cell renderer