Observer pattern is one of the best solution. Message will be sent only to those objects (components) that are really interested in it. So reciever must subscribe on this message/event type.

There are many signal/slot implementations. For example, in C++ there is a sigslot library

For more information read about Qt signals and slots.

Observer pattern is one of the best solution. Message will be sent only to those objects (components) that are really interested in it. So reciever must subscribe on this message/event type.

There are many signal/slot implementations. For example, in C++ there is a sigslot library

For more information read about Qt signals and slots.