Microsoft KB Archive/919039

= FIX: You receive a &quot;type mismatch&quot; error message when you build a C++-based attributed ATL component and you call the ATL component from Visual Basic Scripting Edition in Visual Studio 2005 =

Article ID: 919039

Article Last Modified on 7/26/2006

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APPLIES TO


 * Microsoft Visual Studio 2005 Express Edition
 * Microsoft Visual Studio 2005 Professional Edition
 * Microsoft Visual Studio 2005 Standard Edition

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SYMPTOMS
When you build a C++-based Active Template Library (ATL) component in Microsoft Visual Studio 2005, and you call the ATL component from Microsoft Visual Basic Scripting Edition, you may receive the following error message:

type mismatch

This problem only occurs when the called method has an [in,out] parameter. For example, you may use the following code in the called method: id(1), helpstring(&quot;method ReturnString&quot;)] HRESULT ReturnString([in,out] VARIANT* outstr)



RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Visual Studio 2005 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
This hotfix requires Microsoft Visual Studio 2005.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other software updates.

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Itanium-architecture version


WORKAROUND
To work around this problem, you can use a non-attributed ATL component.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the Standard Terminology That Is Used to Describe Microsoft Software Updates

Keywords: kbqfe kbpubtypekc kbhotfixserver KB919039

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