comp.lang.idl-pvwave archive: archive » Re: IDL objected oriented question

Home » Public Forums » archive » Re: IDL objected oriented question

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: IDL objected oriented question [message #34637 is a reply to message #34636]

Wed, 09 April 2003 09:33

Pavel Romashkin
Messages: 166
Registered: April 1999

Senior Member

There is no question that IDL object implementation is crippled. Just as
there is no question that even as it is, it is very useful.
I have been following the threads addressing heap cleanup and this one,
and - what can we do? - yes, we have to take care of many things that
other languages do on their own.
With regard to Catalyst, I suppose, you just right click on
dfanning.com/catalyst.zip and choose "download to disk", and enjoy :-)
Jokes aside, I thought of doing a similar thing as Catalyst, but for a
different reason - using small widget systems that don't even have to be
visible to help objects do their business. So to say, fill the gaps in
object implementation with widget events, just like in, for instance,
VBA, where objects can simply listen to each other (in addition to true
encapsulation and automatic cleanup :-)
Then of course, it all comes back to a global event sink, object
self-awareness and transmogrification. Which ends up to be a Common
variable or elusive orphaned pointer :-)
The reason I haven't done it is, I never really needed it. Shouldn't be
very difficult and a fun, challenging project. Any takers?

Cheers,
Pavel

> Dave Burridge and I have solved this problem with our Catalyst
> Object Library by wrapping all widgets up as objects. Then widget
> events automatically get sent to event handler *methods* rather
> than event handler procedures. This makes it possible to write
> widget programs in the normal way, but you get to take advantage
> of the many lovely properties of objects, too. It is the best
> of both worlds, really.

Report message to a moderator

[Message index]

		Re: IDL objected oriented question By: tam on Thu, 10 April 2003 05:49
		Re: IDL objected oriented question By: Randall Skelton on Wed, 09 April 2003 23:34
		Re: IDL objected oriented question By: David Fanning on Wed, 09 April 2003 12:52
		Re: IDL objected oriented question By: Pavel Romashkin on Wed, 09 April 2003 09:33
		Re: IDL objected oriented question By: David Fanning on Wed, 09 April 2003 06:50
		Re: IDL objected oriented question By: pashas77 on Wed, 09 April 2003 06:40
		Re: IDL objected oriented question By: David Fanning on Tue, 08 April 2003 20:19
		Re: IDL objected oriented question By: Mark Hadfield on Tue, 08 April 2003 15:26
		Re: IDL objected oriented question By: David Fanning on Tue, 08 April 2003 10:11
		Re: IDL objected oriented question By: btt on Tue, 08 April 2003 09:53
		Re: IDL objected oriented question By: JD Smith on Sat, 12 April 2003 21:35

Previous Topic:	Re: ENVI band math: "b1 gt b2 " , "(b1-b2) gt 0" same or not?
Next Topic:	Question on ENVI 3.6

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 15:27:51 PDT 2025

Total time taken to generate the page: 0.00457 seconds