Inserts text at position in the list of strings stored in combo_box. If id is non-null then it is used as the ID of the row. See #GtkComboBox:id-column.
If position is negative then text is appended.
An index to insert text
a string ID for this value, or null
A string to display
Inserts text at position in the list of strings stored in combo_box. If id is non-null then it is used as the ID of the row. See #GtkComboBox:id-column.
If position is negative then text is appended.