BUG: COM Interop: No Built-in Support VARIANT of Type VT_RECORD (309329)


The information in this article applies to:

  • Microsoft .NET Framework 1.1
  • Microsoft .NET Framework 1.0
This article was previously published under Q309329

SYMPTOMS

In COM, a VARIANT that contains a structure is of type VT_RECORD. Similarly, a SAFEARRAY is of type VT_RECORD when its element types are structures. In Beta 2, VARIANTs of type VT_RECORD and SAFEARRAYs of type VT_RECORD are not supported by COM interop.

RESOLUTION

To resolve this problem, construct a custom marshaler that adds this functionality.

STATUS

Microsoft has confirmed that this is a problem in Microsoft .NET Framework SDK.

MORE INFORMATION

In the release build, support has been added for SAFEARRAYs of structures. VARIANTs of type VT_RECORD continue to be unsupported by the COM interop facilities.
Modification Type:MajorLast Reviewed:4/8/2003
Keywords:kbMarshal kbbug kbCOMInterop kbpending kbreadme KB309329
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