gtk-tree-model-iter-children (model parent)

model -- a gtk-tree-model object
parent -- a gtk-tree-iter iterator, or nil

A gtk-tree-iter iterator.

Returns the iterator to the first child of parent. If parent has no children, nil is returned. The parent iterator will remain a valid node after this function has been called.

If parent is nil returns the first node. This is equivalent to:

(gtk-tree-model-iter-first model)