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 [property@Gtk.ComboBox: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
See Implementation
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 [property@Gtk.ComboBox:id-column].
If @position is negative then @text is appended.