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Date:	Thu, 21 Dec 2006 10:20:05 -0800
From:	"Steven Levine" <steve53@earthlink.net >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: Peculiar behavior of 4/OS2.EXE...?

In <458AC139.1020605@ca.rr.com>, on 12/21/06
at 09:15 AM, Martin Rosenfeld said:

>I still don't quite get the difference between a program file object and
>a program object. A program file object gets created when you open the
>file where the program lives, but it sure looks the same in its
>properties as an object you create from a template (if a window button
>is selected).

A program file object represents a physical file. If you delete the
object, the file is deleted too.

A program reference object is an abstract object. It only refers to the
file object. If you delete the reference object, the physical file is not
deleted. In this sense, a program reference object is like a shadow.

If you change the properties of a program reference object, the properties
of the underlying program file object do not change. In this sense, a
reference object differs from a shadow.

Program reference objects are useful because they allow you to run the
same program with differing parameters. Also, they allow you to give the
object a more descriptive title than the program name itself.

Steven

--
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"Steven Levine" MR2/ICE 2.67 #10183 Warp/eCS/DIY/14.103a_W4
www.scoug.com irc.fyrelizard.com #scoug (Wed 7pm PST)
----------------------------------------------------------------------

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