Solved

Error when creating a second instance of a COM control

Posted on 2004-09-21
7
284 Views
Last Modified: 2013-11-26
Hi Experts,

I am developing a small COM control using Visual Basic 6.0. Everything works fine with the control until I try to make two simultaneously running instances of it. The first instance is created without any problems, however the second does give the following error:

Not enough storage is aviable to complete this operation

I have enough RAM and hard drive space available. I tried the same control with ASP and with a small Delphi application and I get the same error.

I suppose my control is somehow configured to run only a single instance, but I don't know how to control this. Can someone help?

Thanks!
TheAvenger
0
Comment
Question by:TheAvenger
7 Comments
 
LVL 10

Accepted Solution

by:
fds_fatboy earned 250 total points
ID: 12110719
As a first guess:

Do you have any
        global variables?
        module level or static variables held in standard (not class) modules?
If so, be aware that all these variables will be shared between ALL instances of your control running. This can give unexpected results. If you have, you are almost certainly better off replacing them with other options - ask me if you need to know.

Otherwise - please post some code to let us see what is happening.
0
 
LVL 5

Expert Comment

by:KarcOrigin
ID: 12110740
What is your OS and which service pack you have installed?


0
 
LVL 20

Author Comment

by:TheAvenger
ID: 12110793
The OS is Windows XP, SP 1 and SP2 (two machines).

I have some global variables. I will try to move them in a class and come back with a post after it.
0
Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
LVL 26

Expert Comment

by:EDDYKT
ID: 12111130
0
 
LVL 20

Author Comment

by:TheAvenger
ID: 12111357
@EDDYKT: Unfortunately not
0
 
LVL 26

Expert Comment

by:EDDYKT
ID: 12111540
What do you do inside your COM object? Database accessing?


Is your COM object ocx or dll?
0
 
LVL 20

Author Comment

by:TheAvenger
ID: 12112824
It was a problem with the log I was using - it was using a file and probably locked it. I now use the Event Log of NT and it works just fine.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction While answering a recent question (http://www.experts-exchange.com/Q_27402310.html) in the VB classic zone, I wrote some VB code in the (Office) VBA environment, rather than fire up my older PC.  I didn't post completely correct code o…
When trying to find the cause of a problem in VBA or VB6 it's often valuable to know what procedures were executed prior to the error. You can use the Call Stack for that but it is often inadequate because it may show procedures you aren't intereste…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…

791 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question