Since 2.68keySince 2.68nextReturns the next in-order node of the tree, or null
if the passed node was already the last one.
the next node in the tree
Since 2.68previousReturns the previous in-order node of the tree, or null
if the passed node was already the first one.
the previous node in the tree
Since 2.68value
An opaque type which identifies a specific node in a GLib.Tree.
Since
2.68