transmit-as.md

description	title	ms.date	f1_keywords	helpviewer_keywords	ms.assetid
Learn more about: transmit_as	transmit_as (C++ COM Attribute)	10/02/2018	vc-attr.transmit_as	transmit_as attribute	53d0b8ab-5b06-423e-83eb-3d01a10424b2

transmit_as

Instructs the compiler to associate a presented type that client and server applications manipulate, with a transmitted type.

Syntax

[ transmit_as(type) ]

Parameters

type
Specifies the data type that is transmitted between client and server.

Remarks

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

Example

The following code shows a use of the transmit_as attribute:

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

[export] typedef struct _TREE_NODE_TYPE {
unsigned short data;
struct _TREE_NODE_TYPE * left;
struct _TREE_NODE_TYPE * right;
} TREE_NODE_TYPE;

[export] struct PACKED_NODE {
   unsigned short data;   // same as normal node
   int index;   // array index of parent
};

// A left node recursive built array of
// the nodes in the tree.  Can be unpacked with
// that knowledge
[export] typedef struct _TREE_XMIT_TYPE {
   int count;
   [size_is(count)] PACKED_NODE node[];
} TREE_XMIT_TYPE;

[transmit_as(TREE_XMIT_TYPE)] typedef TREE_NODE_TYPE * TREE_TYPE;

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
export