iterNChildren
Returns the number of children that @iter has.
As a special case, if @iter is null, then the number of toplevel nodes is returned.
Return
the number of children of @iter
Parameters
iter
the GtkTreeIter
Returns the number of children that @iter has.
As a special case, if @iter is null, then the number of toplevel nodes is returned.
the number of children of @iter
the GtkTreeIter