Two responses in one....I can't post from work right now, so if you'd be so
kind as to forward this for me?
Xtras, ActiveX events, Flash (which uses an Xtra)
You should set flags on events received from them and poll those flags on a
regular Director event.
Events n the threads that love them may also just die in the middle of
executing.
It's kinda neat to watch, actually....an ActiveX message send a callback to
my kiosk, and then died 100 ms or so later. So this foreign director
"head" comes into the codes, starts executing, and then stops in the
middle, whereas the Director process "head" was still sitting there trying
to 'go to the frame'.
roymeo
At 07:53 AM 6/30/2005, Brennan Young wrote:
Here's an interesting one.
Using the XML parser Xtra and I discovered that when using the callback
feature of parseURL, script errors are just ignored. The offending code
just exits.
Not getting error messages is A Bad Thing when debugging, as I am sure you
will appreciate. I spent enough time hunting this issue that I have
decided to post about it.
Bare bones circumstances are demonstrated with this behavior:
property xmlparser
on beginsprite me
thisURL = "http://www.w3schools.com/xml/note.xml";
xmlparser = new(xtra "xmlparser")
xmlparser.parseURL(thisURL, #parseDone, me)
end
on parseDone me, l
err = xmlparser.getError()
if voidP (err) or err = "" then -- parse successful?
l = xmlparser.makelist()
put l[0] -- deliberate error (index out of range)
alert "This never happens"
end if
end
If parseDone() calls some other handlers, this error can be even more
difficult to track. The worst thing about this is that *any* script errors
are ignored, regardless of kind, so this issue may rear its ugly head
under many circumstances.
I suppose some of you know this already, but I post it here so that it
might be of use sometime, somewhere.
I long for a proper exception handling mechanism in Lingo.
Brennan
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-----------
Roy Crisman
Macromedia Director Programmer, Lingo Guru, Multimedia Producer
150 Laidley St #1
San Francisco, CA 94131-2754
(585)615-2873 cell
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roymeo(AT)brokenoffcarantenna.com
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