Gtk::ComboBox

[Alexander <rope-walker yandex ru>]

Please elp with using Gtk::ComboBox;
I do such in TreeView:

refptrliststore = Gtk::ListStore::create(tablemodel);
combobox.set_model(refptrliststore);
			
Gtk::TreeModel::iterator iter = refptrliststore->append();
Gtk::TreeModel::Row row = *(iter);

row[tablemodel.column1] = 1;
row[tablemodel.column2] = "asdfasdas";

but after that there is no data, but only clear rows.

In TreeView i use append_column() metod. What i have to use
to add columns to ComboBox.

Maybe you get some example?