On Sat Sep 5 01:42:59 BST 2009, William wrote: > But, if I generate an EVENT (sorry for the language sloppiness earlier) B, > it will go up to A and disappear, unless I propagate it down to the leaves > (which could be dangerous). So, the question is, whether or not there's a > common bus/dispatcher in which B can put some information and whoever wants > to be triggered by it, can?
It sounds like you want some kind of registration and notification system. C requests to receive a certain kind of message, and B sends that kind of message. In this system, A could play the role of broker without needing to explictly connect a signal B to a slot in C. With a direct signal-slot connection between B and C, neither needs to know about the other, but the issue is more about A having access to both of them. With some kind of broker system, you could connect a signal from B to a signal in A, and connect the signal in A to a slot in C at a different time. Alternatively, you could have a separate object that redirects signals from arbitrary objects to other arbitrary objects. None of the objects have to know about each other; they just have to have access to this object. There's probably a name for this kind of system. David _______________________________________________ PyQt mailing list [email protected] http://www.riverbankcomputing.com/mailman/listinfo/pyqt
