look for 'Blocking Slots (Beginner)' in http://boost.org/doc/html/signals/tutorial.html#id2732772

-- HTH dave

[Nat] But that seems to require retaining each connection, which the OP says he doesn't have. Is there an operation to block the /signal/ versus individual /slots/?

Exactly! A function like signal.block() and signal.unblock() witch block and unblock all the connections. Thanks

Nat Goodspeed wrote:

[Nat] But that seems to require retaining each connection, which the OP says he doesn't have. Is there an operation to block the /signal/ versus individual /slots/? _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

*blush* Oh sorry, i guess i read to fast. Blocking the signal doesn't seem to be possible, so i'd probably use a second signal, with the original one controlling the blocking. -- Regards, dave

Timmo Stange wrote:

Dahman wrote:

...

Hi, I have a signal with many slots connected to it and I have a class object witch want to have the possibility to block this signal at the start and unblock it later, but know nothing about what and how many slots are connected to it (then can't use connection.disconnect()).

Is there any solution for this problem?

The easiest solution would be to use two signals:

signal0<void> initiator; // the signal that is emitted signal0<void> broadcaster; // the signal that observers connect to

signals::connection control = initiator.connect(broadcaster);

// ... connect arbitrary number of slots to the broadcaster

control.block(); initiator(); // will not call any slots control.unblock(); initiator(); // will call the slots

Regards

Timmo Stange

And you could encapsulate this as a class, blockable_signal. --Johan