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Re: [Help-smalltalk] dynamically creating a callback function


From: Krishna
Subject: Re: [Help-smalltalk] dynamically creating a callback function
Date: Wed, 22 Nov 2006 14:45:33 +0530

On 11/22/06, Brad Watson <address@hidden> wrote:
Does anyone have an idea on how a callback function mapped to a class and 
selector could be created dynamically ?  Lots of libraries that Ive examined 
have functions defined within them that require a callback function as one of 
the parameters.  It would be useful to be able define the callback function in 
smalltalk and then pass an address that maps it's way back to it.. Possible ?


Checkout ffcall and libffi . Both offer the facility to build runtime
trampolines. IIRC, CLISP uses ffcall.

Cheers,
Krishna
--
I long to accomplish a great and noble task, but it is my chief duty
to accomplish small tasks as if they were great and noble !
- Helen Keller




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