convertIterToChildIter
Sets @child_iter to point to the row pointed to by @filter_iter.
Parameters
childIter
An uninitialized GtkTreeIter
filterIter
A valid GtkTreeIter pointing to a row on @filter.
Sets @child_iter to point to the row pointed to by @filter_iter.
An uninitialized GtkTreeIter
A valid GtkTreeIter pointing to a row on @filter.