2012/1/9 Ralf Schülke <ralf.schuelke@xxxxxxxxxxxxxx>: > i see the ColumnListView.h are a private header. > > So what can do to make this to a public header for Haiku. In short, this has come up in the past. That one won't be public until its API is completely redesigned, since right now it has no real model/view/controller separation, amongst many other issues. Regards, Rene