There are some situations when the VM reacts with spureous #doesNotUnderstand: messages when an unspected callback is activated.
I am working on it.
( Provably we must have a process to handle callbacks.
Currently the currentProcess is used and up to now we does not have an Interpreter>>saveState/restreState service. )

You can experience the problem evaluating the CallBackTest>>#timer test.
....Remember to save your image :-)

Ale.

----------
Desde: 	Blake McBride
Enviado el: 	Lunes 26 de Enero de 1998 16:45
Para: 	squeak at cs.uiuc.edu
Asunto: 	Re: API Calls, ExternalStructures and now... Callbacks!

At 04:10 PM 1/26/98 -0000, you wrote:
>***New Update***
>I've extended the API package with callback support.
>It runs on Squeak 1.3 for Windows without Jitter.
>This is a very first aproach to callbacks but it is working (>50% times :-)

This is all very exciting.  I put in a month trying to add callbacks
unsuccessfully.  BTW, what does >50% times mean?

--blake


--
Download source code to my Dynace Object Oriented
Extension to C and Windows Development System from:
http://www.edge.net/algorithms
Blake McBride (blake at edge.net)
Algorithms Corporation - 615-791-1636 - USA