GtkTreeItem #GtkTree is deprecated and unsupported. It is known to be buggy. To use it, you must define the symbol %GTK_ENABLE_BROKEN prior to including the GTK+ header files. Use #GtkTreeView intead. @obj: @Returns: @label: @Returns: @tree_item: @subtree: @tree_item: @tree_item: @tree_item: @tree_item: @tree_item: @treeitem: the object which received the signal. @treeitem: the object which received the signal.