gtk:tree-store-append (store parent)

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

The gtk:tree-iter iterator of the appended row.

Appends a new row to the tree store. If the parent argument is non-nil, then it will append the new row after the last child of parent, otherwise it will append a row to the toplevel. The row will be empty after this function is called. To fill in values, you need to call the gtk:tree-store-set or gtk:tree-store-set-value functions.