MessageNotUnderstood: UndefinedObject>>includes:

> I have this kind of error which appear randomly when I am
> instantiating and displaying in real world a Morph.
> Next from the morph is deduced Form field to use as the basis of a PNG
> image for Seaside canvas.
> It is easy to fix (or a least prevent the error) but it is system
> land... so I am curious to read if other meet this problem.
>
> See debuglog
> --
> http://blog.ofset.org/hilaire
>

> There are a number of entries in Mantis for Squeak about this.
> My feeling is that more than one preocess is running the world loop such
> that one starts doing the loop, another starts before the first is finished
> and ends (setting to nil) then the first encounters this.
> The world loop is not thread safe.
>
>
> ________________________________
> From: Hilaire Fernandes <[hidden email]>
> To: Pharo Development <[hidden email]>
> Sent: Wednesday, 25 February, 2009 12:04:24 PM
> Subject: [Pharo-project] MessageNotUnderstood: UndefinedObject>>includes:
>
> I have this kind of error which appear randomly when I am
> instantiating and displaying in real world a Morph.
> Next from the morph is deduced Form field to use as the basis of a PNG
> image for Seaside canvas.
> It is easy to fix (or a least prevent the error) but it is system
> land... so I am curious to read if other meet this problem.
>
> See debuglog
> --
> http://blog.ofset.org/hilaire
>
> _______________________________________________
> Pharo-project mailing list
> [hidden email]
> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
>

> Okay, thanks for the tip. Indeed this cascade of events occurs within
> Seaside, which, if I understand correctly, run in its own thread.
> The only things I am doing from this thread is to display a Morph. How
> could I do that so the bang does not show up?
>
> Hilaire
>
>
> 2009/2/25 GARY CHAMBERS <[hidden email]>:
>> There are a number of entries in Mantis for Squeak about this.
>> My feeling is that more than one preocess is running the world loop such
>> that one starts doing the loop, another starts before the first is finished
>> and ends (setting to nil) then the first encounters this.
>> The world loop is not thread safe.
>>
>>
>> ________________________________
>> From: Hilaire Fernandes <[hidden email]>
>> To: Pharo Development <[hidden email]>
>> Sent: Wednesday, 25 February, 2009 12:04:24 PM
>> Subject: [Pharo-project] MessageNotUnderstood: UndefinedObject>>includes:
>>
>> I have this kind of error which appear randomly when I am
>> instantiating and displaying in real world a Morph.
>> Next from the morph is deduced Form field to use as the basis of a PNG
>> image for Seaside canvas.
>> It is easy to fix (or a least prevent the error) but it is system
>> land... so I am curious to read if other meet this problem.
>>
>> See debuglog
>> --
>> http://blog.ofset.org/hilaire
>>
>> _______________________________________________
>> Pharo-project mailing list
>> [hidden email]
>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
>>
>
>
>
> --
> http://blog.ofset.org/hilaire
>

>
> The proper way to do this is to inject events into the UI
> thread:
>
> WorldState addDeferedUIMessage:
> [MyMorph new openInWorld]
>
> --
> Matthew Fulmer -- http://mtfulmer.wordpress.com/
>
> _______________________________________________
> Pharo-project mailing list
> [hidden email]
> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
>