Specifies the type of function passed to g_tree_traverse.
It is passed the key and value of each node, together with the user_data parameter passed to g_tree_traverse.
If the function returns true, the traversal is stopped.
| key |
a key of a Tree node |
| value |
the value corresponding to the key |
| user_data |
user data passed to |
|
true to stop the traversal |