Shared variables in an activeX exe

[Joel Ryan]

Hello group
I just read an article in VBPJ (Oct 99) about messaging. In it,
they use a public object variable in a standard module to communicate
between instances of the program. The program is set as an ActiveX
EXE. It seems that every time I start the EXE, the public object in
each instance point to the same object. It is declared like this:

Public gobjMathProblemCenter As New MathProblemCenter

Why does this occur? If someone showed me this code, I would assume a
new object is created everytime a new instance of the app is started.

Thanks a 10^6
-- Joel

[Joel Ryan]

Below is what one person wrote me (thanks BTW). I'll put it on the
newsgroup for others to read. Any other comments on this?
-- Joel


-------- Original Message --------
Subject: Re: Shared variables in an activeX exe
Date: Fri, 11 Aug 2000 21:22:28 +1000
From: "Steve Fillingham" <steve51@ihug.com.au>
Reply-To: "Steve Fillingham" <steve51@ihug.com.au>
Organization: CodeDrive Pty Ltd
To: "Joel Ryan" <jryan@vsi-hq.com>
References: <3992C588.C97A02F9@vsi-hq.com>

Hi Joel,
I think this is because (under 95 & 98) the ActiveX EXE is only loaded

once and simply referenced by multiple clients. If you are running it as
a
DCOM server on NT, since DCOM under NT will create a seperate instance for

each client depending upon how the client is logging on to the DCOM
server.
You can set it up thru DCOMCNFG to log on as a single specified user and
it
will reference the same instance of your ActiveX EXE.
Im not that familiar with what Iv said here, Im just getting into this

stuff myself. Hope it helps anyway ..

Steve Fillingham
steve51@ihug.com.au



Joel Ryan wrote:

> Hello group
> I just read an article in VBPJ (Oct 99) about messaging. In it,
> they use a public object variable in a standard module to communicate
> between instances of the program. The program is set as an ActiveX
> EXE. It seems that every time I start the EXE, the public object in
> each instance point to the same object. It is declared like this:
>
> Public gobjMathProblemCenter As New MathProblemCenter
>
> Why does this occur? If someone showed me this code, I would assume a
> new object is created everytime a new instance of the app is started.
>
> Thanks a 10^6
> -- Joel