gtk-tree-model-filter-convert-child-path-to-path (filter child-path)

filter -- a gtk-tree-model-filter object
child-path -- a gtk-tree-path instance to convert

A newly allocated gtk-tree-path instance, or nil.

Converts child-path to a path relative to filter. That is, child-path points to a path in the child model. The returned path will point to the same row in the filtered model. If child-path is not a valid path on the child model or points to a row which is not visible in filter, then nil is returned.