Sets the model column which combo_box should use to get strings from to be text_column.
For this column no separate gtk.cell_renderer.CellRenderer is needed.
The column text_column in the model of combo_box must be of type G_TYPE_STRING.
This is only relevant if combo_box has been created with propertyGtk.ComboBox:has-entry as true.
A column in model to get the strings from for the internal entry
Deprecated: Use gtk.drop_down.DropDown
Sets the model column which combo_box should use to get strings from to be text_column.
For this column no separate gtk.cell_renderer.CellRenderer is needed.
The column text_column in the model of combo_box must be of type G_TYPE_STRING.
This is only relevant if combo_box has been created with propertyGtk.ComboBox:has-entry as true.