wire-marshal.md

description	Learn more about: wire_marshal
title	wire_marshal (C++ COM Attribute)
ms.date	10/02/2018
f1_keywords	vc-attr.wire_marshal
helpviewer_keywords	wire_marshal attribute
ms.assetid	244f9d72-776d-4ebd-b60a-cee600a126b5

wire_marshal

Specifies a data type that will be used for transmission instead of an application-specific data type.

Syntax

[wire_marshal]

Remarks

The wire_marshal C++ attribute has the same functionality as the wire_marshal MIDL attribute.

Example

The following code shows a use of wire_marshal:

// cpp_attr_ref_wire_marshal.cpp
// compile with: /LD
#include "windows.h"
[module(name="MyLibrary")];

[export, public] typedef unsigned long _FOUR_BYTE_DATA;

[export] typedef struct _TWO_X_TWO_BYTE_DATA {
   unsigned short low;
   unsigned short high;
} TWO_X_TWO_BYTE_DATA ;

[export, wire_marshal(TWO_X_TWO_BYTE_DATA)] typedef _FOUR_BYTE_DATA FOUR_BYTE_DATA;

Requirements

Attribute context	Value
Applies to	typedef
Repeatable	No
Required attributes	None
Invalid attributes	None

For more information about the attribute contexts, see Attribute Contexts.

See also

IDL Attributes
Typedef, Enum, Union, and Struct Attributes