GtkCellRendererCombo Renders a combobox in a cell #GtkCellRendererCombo renders text in a cell like #GtkCellRendererText from which it is derived. But while #GtkCellRendererText offers a simple entry to edit the text, #GtkCellRendererCombo offers a #GtkComboBox or #GtkComboBoxEntry widget to edit the text. The values to display in the combo box are taken from the tree model specified in the model property. The combo cell renderer takes care of adding a text cell renderer to the combo box and sets it to display the column specified by its text-column property. Further cell renderers can be added in a handler for the editing-started signal. @Returns: