vararg SAFEARRAY(VARIANT)* in C#

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Ruslan Popov - 14 Nov 2005 11:56 GMT

Hello,

Is there a way to expose to COM a method of a C# type according to the
following IDL:

[vararg] void MyMethod([in, out] SAFEARRAY(VARIANT)* params)

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Best regards,
Ruslan Popov

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"Peter Huang" [MSFT] - 15 Nov 2005 08:57 GMT

Hi

Here is a sample for your reference.
    [ClassInterface(ClassInterfaceType.AutoDual)]
    public class TestClass
    {
        public void
MyMethod([MarshalAs(UnmanagedType.SafeArray,SafeArraySubType=VarEnum.VT_VARI
ANT)]ref System.Array param)
        {
            ;
        }
    }

Also here is link about Default Marshaling for Arrays in .NET.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/htm
l/cpconDefaultMarshalingForArrays.asp

Best regards,

Peter Huang
Microsoft Online Partner Support

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Ruslan Popov - 16 Nov 2005 08:31 GMT

Hi Peter,

If you look at the resulting IDL more carefully, you'll see your method is
exposed without the vararg attribute, which was the main point. Well, I
managed to get what I want automatically by creating a NAnt task for editing
IDL. Thanks for your help.

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Best regards,
Ruslan Popov

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"Peter Huang" [MSFT] - 16 Nov 2005 11:32 GMT

Hi

Thanks for your knowledge sharing.

Best regards,

Peter Huang
Microsoft Online Partner Support

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This posting is provided "AS IS" with no warranties, and confers no rights.

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vararg SAFEARRAY(VARIANT)* in C#

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