>> There is no ICommand implementation and there NEVER will be. There is no need.
I've just come up against this issue....
Cannot attach type "ActionMessage" to type "BarButtonItem". Instances of type "ActionMessage" can only be attached to objects of type "FrameworkElement".
when trying to add an ActionMessage to a DevExpress control. Now DevExpress have said they will change their Bar control to derive from FrameworkElement instead of FrameworkContentElement in a future release, so need and I've been looking for a workaround.
Indeed, just finding that there is no ICommand feature in Caliburn.Micro, I was about to add a DelegateCommand or RelayCommand as an alternative.
Unless there is a better way?