Gets the key stored at a particular tree node.
the key at the node.
Returns 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
Returns 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
Gets the value stored at a particular tree node.
the value at the node.
An opaque type which identifies a specific node in a GLib.Tree.
Since
2.68