Re: Any implementation for one-many message dispatching mechanism in C++?
"BruceWho" wrote:
Is there any mature library which implements a global
message
dispatching mechanism? I'm playing with wxpython in my
spare time, and
I like the pubsub or pyDispatch module very much. Any
object can
register a callable object to an event, and when this
event happens the
callable object(or maybe more than one objects) is called.
I donnot like MFC's SendMessage() and PostMessage()
because we must get
a hWnd at the same time. Maybe more than one object need
to be called.
I cannot find such implementation in MFC.
Actually, it's not so difficult to implement that on top of
Windows messaging mechanism. All dirty work is already done
by the system. All you need to do is to register windows
handles with event source class, then just call
SendMessage/PostMessage in a loop for every registered
client.
If you want full blown event mechanism, then there are COM
Events. COM event allows many listeners to same event.
"Architecture of Connectable Objects"
http://msdn.microsoft.com/library/en-us/com/html/69949a3b-3ab8-4054-84d8-9256fbf39c7b.asp
HTH
Alex
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