gtk-tree-store-set-column-types (store types)

store -- a gtk-tree-store object
types -- a list g-type types, one for each column

This function is meant primarily for GObjects that inherit from the gtk-tree-store class, and should only be used when constructing a new gtk-tree-store object. It will not function after a row has been added, or a method on a gtk-tree-model object is called.