Solved

COM & Errors

Posted on 1998-07-21
2
187 Views
Last Modified: 2013-11-25
I've got a COM server written in VC++ 5.0 with ATL whose target client is applications written in VB.  What I would love to do is throw an exception from the COM component and have standard error handling in VB be able to trap it.  This approach isn't working.  I'm having a hard time finding any documentation on this issue.  Please help.
0
Comment
Question by:rayb
2 Comments
 
LVL 15

Accepted Solution

by:
Tommy Hui earned 50 total points
ID: 1168206
You need to make sure your server has the ISupportErrorInfo interface. You can use the checkbox in the Object Wizard Attributes tab.

Once you have that, you can call CComCoClass::Error() to create an EXCEPINFO object. Then you must also return a proper error code (for example, E_FAIL).

0
 
LVL 2

Author Comment

by:rayb
ID: 1168207
Thanks, thui.

0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Introduction This article is a continuation of the C/C++ Visual Studio Express debugger series. Part 1 provided a quick start guide in using the debugger. Part 2 focused on additional topics in breakpoints. As your assignments become a little more …
Entering time in Microsoft Access can be difficult. An input mask often bothers users more than helping them and won't catch all typing errors. This article shows how to create a textbox for 24-hour time input with full validation politely catching …
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.
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…

867 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

22 Experts available now in Live!

Get 1:1 Help Now