Smart Client Message area only exists for the main windows, this is by design.
To me it seems that what you want could be achieved by giving the view a meaningful name instead, I might be mistaken but hope the mention of this idea might be a help.
I created some constant view names through PlugIn. I am passing cameras to views from external source as a input. I need to display some Message on view based on cameras on multiwindow.
I can display that message only on Main window by using Smart Client Message area.
Is there any other way to display message on view on Multiwindow?
or Is there any possibility to add text for layout name or camera names?