TreeStore.setColumnTypes
void setColumnTypes(gobject.types.GType[] types)This function is meant primarily for #GObjects that inherit from #GtkTreeStore, and should only be used when constructing a new #GtkTreeStore. It will not function after a row has been added, or a method on the #GtkTreeModel interface is called.
Parameters
types | An array of #GType types, one for each column |