Gtk.ComboBox.set_row_separator_func

### Method

# Gtk ComboBoxset_row_separator_func

#### Declaration [src]

    void
    gtk_combo_box_set_row_separator_func (
      GtkComboBox* combo_box,
      GtkTreeViewRowSeparatorFunc func,
      gpointer data,
      GDestroyNotify destroy
    )

#### Description [src]

Sets the row separator function, which is used to determine whether a row should be drawn as a separator.

If the row separator function is `NULL`, no separators are drawn. This is the default value.

#### Parameters

`func`

  Type: `GtkTreeViewRowSeparatorFunc`

  A `GtkTreeViewRowSeparatorFunc`

  The argument can be `NULL`.

`data`

  Type: `gpointer`

  User data to pass to `func`.

  The argument can be `NULL`.
  The data is owned by the caller of the function.

`destroy`

  Type: `GDestroyNotify`

  Destroy notifier for `data`.

  The argument can be `NULL`.