createChildAnchor
Creates and inserts a child anchor.
This is a convenience function which simply creates a child anchor with ctor@Gtk.TextChildAnchor.new and inserts it into the buffer with method@Gtk.TextBuffer.insert_child_anchor.
The new anchor is owned by the buffer; no reference count is returned to the caller of this function.
Return
the created child anchor
Parameters
iter
location in the buffer