#ifndef _MFnMessageAttribute
#define _MFnMessageAttribute
//-
// ==========================================================================
// Copyright (C) 1995 - 2006 Autodesk, Inc., and/or its licensors.  All
// rights reserved.
//
// The coded instructions, statements, computer programs, and/or related
// material (collectively the "Data") in these files contain unpublished
// information proprietary to Autodesk, Inc. ("Autodesk") and/or its
// licensors,  which is protected by U.S. and Canadian federal copyright law
// and by international treaties.
//
// The Data may not be disclosed or distributed to third parties or be
// copied or duplicated, in whole or in part, without the prior written
// consent of Autodesk.
//
// The copyright notices in the Software and this entire statement,
// including the above license grant, this restriction and the following
// disclaimer, must be included in all copies of the Software, in whole
// or in part, and all derivative works of the Software, unless such copies
// or derivative works are solely in the form of machine-executable object
// code generated by a source language processor.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.
// AUTODESK DOES NOT MAKE AND HEREBY DISCLAIMS ANY EXPRESS OR IMPLIED
// WARRANTIES INCLUDING, BUT NOT LIMITED TO, THE WARRANTIES OF
// NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,
// OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE. IN NO
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// ==========================================================================
//+
//
// CLASS:    MFnMessageAttribute
//
// ****************************************************************************

#if defined __cplusplus

// ****************************************************************************
// INCLUDED HEADER FILES


#include <maya/MFnAttribute.h>

// ****************************************************************************
// DECLARATIONS

class MString;

// ****************************************************************************
// CLASS DECLARATION (MFnMessageAttribute)

//! \ingroup OpenMaya MFn
//! \brief Message attribute function set. 
/*!
 Function set for message attributes.  A message attribute is a dependency node
 attribute that does not transmit data.  Message attributes only exist to
 formally declare relationships between nodes.  By connecting two nodes
 via message attributes, a relationship between those nodes is expressed.
 Message attribute connections can be traversed in the same manner as
 any other connection in the dependency graph.
*/
class OPENMAYA_EXPORT MFnMessageAttribute : public MFnAttribute
{
	declareMFn(MFnMessageAttribute, MFnAttribute);

public:
	MObject    create( const MString& fullName,
					   const MString& briefName,
					   MStatus* ReturnStatus = NULL );

BEGIN_NO_SCRIPT_SUPPORT:

 	declareMFnConstConstructor( MFnMessageAttribute, MFnAttribute );

END_NO_SCRIPT_SUPPORT:

protected:
// No protected members

private:
// No private members
};

#endif /* __cplusplus */
#endif /* _MFnMessageAttribute */