[Boost-users] [dll] Notifying a plugins host that a plugin should be unloaded

Hi all, I have an application that uses boost.dll to provide plugin functionality. I have a base class defined that all plugins derive from. I'm looking for a way to notify the host application that a particular plugin should be unloaded. This is determined by the plugin itself. Is signals/slots appropriate here or is there a better option? Has anyone else done anything like this? Any help appreciated. Kind regards Sean.