Solved

Does 0 memory address on AV mean anything?

Posted on 2003-12-02
3
222 Views
Last Modified: 2010-04-05
Hello,

A user got an Access Violation with the following message:

Access violation at address 00000000. Read of address 00000000.

He couldn't tell me exactly what he was doing at the time, and what he did that led up to the AV. So there's little (or nothing) I can do to troubleshoot this.

However, I find it interesting that the address was 00000000 and am wondering if that's indicative of anything in particular.

Any help would be appreciated.

Ron
"FeralCTO"
0
Comment
Question by:FeralCTO
3 Comments
 
LVL 1

Expert Comment

by:roknjohn
Comment Utility
Possibly you are accessing properties of a form that hasn't been created yet.  Just a SWA Guess.
0
 
LVL 8

Accepted Solution

by:
gmayo earned 500 total points
Comment Utility
00000000 is a nil pointer. As roknjohn suggested, possibly a form, but could be any class really, or a dynamic array  that hasn't been initialised, or a record pointer not initialised, or anything. Not much information to go on.

Geoff M.
0
 
LVL 27

Expert Comment

by:kretzschmar
Comment Utility
yep, geoff is right, nil is an ordinary 0
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

744 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

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now