On 11 Jul 2005, at 23:08, Alex Tweedly wrote:
I'm sure I've done this before, but can't remember where, and can't
figure out how to do it again.
Sigh :-( Another CRAFT day :-)
I want to build a library where some of the functions in it have
parameters which are callbacks;
agtMyFunction pData, pCallBackMessage
the functions will return immediately, and later when the right
circumstances exist, the library will send pCallBackMessage to the
object which called the library.
(i.e. just like the callbacks on the socket library).
How do you find which object *called* the library ? (not "target
()" - that's the object that originally received a message - if its
script has called a handler in, say, the card script and that calls
the library, then I need to find the card, not the original object)
The target will probably work if (using your card script example) the
target object calls the card script handler using the normal message
hierachy. So if the callback is sent from the library to the target,
and there is no handler in the target, it will pass to the card.
Otherwise, I think you have to specify in a parameter the object
where the handler is.
CRAFT ? I had to look this up because I couldn't remember what it
stood for. :-)
Cheers
Dave
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