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COM & Errors

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.
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rayb
Asked:
rayb
1 Solution
 
Tommy HuiCommented:
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).

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raybAuthor Commented:
Thanks, thui.

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