Missing GLIBMM_API for Interface
Missing GLIBMM_API for Interface

It is used by Gtk::CellLayout and Gtk::TreeViewColumn. Bug #748719.

GNOME/glibmm,GNOME/glibmm,johne53/MB3Glibmm,GNOME/glibmm,GNOME/glibmm,johne53/MB3Glibmm,johne53/MB3Glibmm,johne53/MB3Glibmm,GNOME/glibmm