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

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

The 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)  

The gtk:tree-model implementation is deprecated since 4.10. Please do not use it in newly written code.