?
Solved

Troubleshooting with converting code from WIN NT to WIN 2000

Posted on 2002-07-02
4
Medium Priority
?
166 Views
Last Modified: 2013-12-03
Hi
My name is Avishay abahel, and I m software engineer from Israel.

My question:
I m trying to run a software (contains com objects and multithreaded) which were written in WIN NT, on Windows 2000.
When I m run it with within the msdev(by pressing the F5 key), it’s running.
But, if I m trying to run the executable file, it fails in mode debug and release as follow:
1.     Mode debug: I m using the “MsgWaitForMultipleObjects” API function which I pass it an array of handles I have created. The ret code from this function is ok when it receives messages from the queue. But for the handles array the ret code is –1. I used the “GetLastError” function to figure out what is the problem and the message was: “Handle is invalid”. My question is: why the handle is valid when I m run the software through the msdev environment and invalid if I run the executable file from the explorer.
2.     Release mode: I have exception immediately after I m using the “PostThreadMessage” function.

Thanks for your help!
0
Comment
Question by:Avishaya
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 
LVL 32

Expert Comment

by:jhance
ID: 7124419
One (or more) of your handles being passed to WaitForMultipleObjects() is probably NOT getting initialized.  You realize, I hope, that in DEBUG mode, there is really no such thing as an unititialized variable since the DEBUG library initializes everything for its own purposes.

So when you run DEBUG code OUTSIDE the debugger, you never get a truly uninitialized pointer or handle.  In RELEASE mode, you do and you get a crash.

Check the SOURCE of ALL of your HANDLES passed to WaitFor... and find out which one or ones you are neglecting to init.  That should do it...
0
 

Accepted Solution

by:
modulo earned 0 total points
ID: 10786971
PAQed - no points refunded (of 50)

modulo
Community Support Moderator
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

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.

Question has a verified solution.

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

This article describes how to programmatically preset the "Pages per Sheet" option that's available with most printer drivers.   This setting lets you do "n-Up" printing, where two, four, or more pages are printed on each sheet of paper. If your …
In this article, I will show how to use the Ribbon IDs Tool Window to assign the built-in Office icons to a ribbon button.  This tool will help us to find the OfficeImageId that corresponds to our desired built-in Office icon. The tool is part of…
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…

770 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