GLib.Tree.foreach_node

### Method

# GLib Treeforeach_node

since: 2.68

#### Declaration [src]

    void
    g_tree_foreach_node (
      GTree* tree,
      GTraverseNodeFunc func,
      gpointer user_data
    )

#### Description [src]

Calls the given function for each of the nodes in the `GTree`. The function is passed the pointer to the particular node, and the given `data` parameter. The tree traversal happens in-order.

The tree may not be modified while iterating over it (you can’t add/remove items). To remove all items matching a predicate, you need to add each item to a list in your `GTraverseFunc` as you walk over the tree, then walk the list and remove each item.

Available since: 2.68

#### Parameters

`func`

  Type: `GTraverseNodeFunc`

  The function to call for each node visited. If this function returns `TRUE`, the traversal is stopped.

`user_data`

  Type: `gpointer`

  User data to pass to the function.

  The argument can be `NULL`.
  The data is owned by the caller of the method.