set_row_separator_func

Description:

public void set_row_separator_func (owned TreeViewRowSeparatorFunc? func)

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.

this	a `GtkComboBox`
func	a `GtkTreeViewRowSeparatorFunc`
data	user data to pass to `func`
destroy	destroy notifier for `data`