convertChildIterToIter
Sets @filter_iter to point to the row in @filter that corresponds to the row pointed at by @child_iter. If @filter_iter was not set, false is returned.
Return
true, if @filter_iter was set, i.e. if @child_iter is a valid iterator pointing to a visible row in child model.
Parameters
filterIter
An uninitialized GtkTreeIter
childIter
A valid GtkTreeIter pointing to a row on the child model.