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Re: EGAD! A common block question....... [message #30883]

Thu, 23 May 2002 09:00

Pavel A. Romashkin
Messages: 531
Registered: November 2000

Senior Member

paul wrote:
>
> I realize common blocks are kind of a nasty subject around here,
> anyway, I'm a newbie to this whole IDL thing, so here is my
> question.......

Allright, caught cheating. How'd you know that common blocks are nasty
if you were so new to IDL and this group? :-)
Anyway, like David said, there's nothing wrong with commons. There may
be a lot of inefficiency though with how one uses them :-)

> I have multiple widget based tools that need to share properties
> (mostly directories and such), my first thought was to create a common
> block that holds a hashtable. Upon initialization, properties are
> read from a file and set in the common block. Also I wanted each tool
> to be able to set its own properties into the common block, therefore,
> the hashtable can grow with each tool initialization. This process
> seems to work fine in the development environment, but not in the
> runtime environment. Any suggestions? Comments? Alternatives?

Again, in this sort of environment one thing I can suggest is trying not
to use common blocks for storing properties of widgets. Use a State
structure. If you are feel like you are up to it, use a State object or
a static shared pointer - if your widgets contain a lot of data to be shared.
Use common block only to pass information about *where* that State is,
not *what* it is.
Good luck,
Pavel

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[Message index]

		Re: EGAD! A common block question....... By: Pavel A. Romashkin on Thu, 23 May 2002 09:00
		Re: EGAD! A common block question....... By: David Fanning on Thu, 23 May 2002 07:10
		Re: EGAD! A common block question....... By: psisk on Thu, 23 May 2002 06:48
		Re: EGAD! A common block question....... By: David Fanning on Wed, 22 May 2002 08:27
		Re: EGAD! A common block question....... By: psisk on Fri, 24 May 2002 08:34

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