MFnGenericAttribute Class Reference
[OpenMaya - API module for common classes, FunctionSet classes]

#include <MFnGenericAttribute.h>

Inheritance diagram for MFnGenericAttribute:

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Collaboration diagram for MFnGenericAttribute:

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List of all members.

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Detailed Description

Generic attribute function set.

MFnGenericAttribute is a function set for attributes that can accept several types of data. A generic attribute is similar to a typed attribute (MFnTypedAttribute) except that it has a list of types that it considers valid.

If the attribute will only take one type of data then it is more efficient to use one of the other attribute function sets such as MFnTypedAttribute or MFnNumericAttribute.

Examples:

genericAttributeNode.cpp, and slopeShaderNode.cpp.

Public Member Functions
virtual MFn::Type	type () const
	Function set type.
virtual	~MFnGenericAttribute ()
	Destructor.
	MFnGenericAttribute ()
	Default constructor.
	MFnGenericAttribute (MObject &object, MStatus *ReturnStatus=NULL)
	Constructor.
MObject	create (const MString &full, const MString &brief, MStatus *ReturnStatus=NULL)
MStatus	addDataAccept (MFnData::Type newType)
MStatus	addNumericDataAccept (MFnNumericData::Type newType)
MStatus	addAccept (const MTypeId &id)
MStatus	removeDataAccept (MFnData::Type oldType)
MStatus	removeNumericDataAccept (MFnNumericData::Type oldType)
MStatus	removeAccept (const MTypeId &id)
	MFnGenericAttribute (const MObject &object, MStatus *ReturnStatus=NULL)
	Constructor.
MStatus	addAccept (MFnData::Type newType)
	Obsolete & no script support.
MStatus	addAccept (MFnNumericData::Type newType)
	Obsolete & no script support.
MStatus	removeAccept (MFnData::Type oldType)
	Obsolete & no script support.
MStatus	removeAccept (MFnNumericData::Type oldType)
	Obsolete & no script support.
Protected Member Functions
virtual const char *	className () const
	Class name.

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Constructor & Destructor Documentation

MFnGenericAttribute::MFnGenericAttribute	(	MObject &	object,
		MStatus *	ReturnStatus = NULL
	)

Constructor.

Class constructor that initializes the function set to the given MObject.

Parameters:

[in]	object	The MObject to attach the function set to
[out]	ReturnStatus	the return status

Status Codes:

• MS::kSuccess if the function set is successfully attached
• MS::kInvalidParameter if the MObject does not represent a valid Maya object or if the function set is not allowed to attach to this MObject

MFnGenericAttribute::MFnGenericAttribute	(	const MObject &	object,
		MStatus *	ReturnStatus = NULL
	)

Constructor.

Class constructor that initializes the function set to the given MObject.

Parameters:

[in]	object	The MObject to attach the function set to
[out]	ReturnStatus	the return status

Status Codes:

• MS::kSuccess if the function set is successfully attached
• MS::kInvalidParameter if the MObject does not represent a valid Maya object or if the function set is not allowed to attach to this MObject

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Member Function Documentation

MFn::Type MFnGenericAttribute::type

(

)

const [virtual]

Function set type.

Return the class type : MFn::kGenericAttribute

Reimplemented from MFnAttribute.

const char * MFnGenericAttribute::className

(

)

const [protected, virtual]

Class name.

Return the class name : "MFnGenericAttribute"

Reimplemented from MFnAttribute.

MObject MFnGenericAttribute::create	(	const MString &	full,
		const MString &	brief,
		MStatus *	ReturnStatus = NULL
	)

Creates a new generic attribute.

The create method needs to be called on a per node basis. That means if you want to create and add the same attribute to multiple nodes, you need to call the create method for each node to get a unique MObject back. If you call create just once and add the attribute to multiple nodes, Maya will encounter a fatal error.

Parameters:

[in]	full	Long name of the attribute.
[in]	brief	Short name of the attribute.
[out]	ReturnStatus	Status code.

Returns:

New attribute.

Status Codes:

• MS::kSuccess operation successful
• MS::kInsufficientMemory out of memory

Examples:

genericAttributeNode.cpp, and slopeShaderNode.cpp.

MStatus MFnGenericAttribute::addDataAccept

(

MFnData::Type

newType

)

Add a new connection type that this attribute can accept.

Parameters:

[in]

newType

new type

Returns:

Status code

Status Codes:

• MS::kSuccess operation successful
• MS::kFailure function set doesn not have valid object, or the add failed

MStatus MFnGenericAttribute::addNumericDataAccept

(

MFnNumericData::Type

newType

)

Add a new connection type that this attribute can accept.

Parameters:

[in]

newType

new type

Returns:

Status code

Status Codes:

• MS::kSuccess operation successful
• MS::kFailure function set doesn not have valid object, or the add failed

MStatus MFnGenericAttribute::addAccept

(

const MTypeId &

id

)

Add a new connection type that this attribute can accept. This method takes the type id (iff tag) of the data objects that can be accepted.

Parameters:

[in]

id

id of new type

Returns:

Status code

Status Codes:

• MS::kSuccess operation successful
• MS::kFailure function set doesn not have valid object, or the add failed

Examples:

genericAttributeNode.cpp, and slopeShaderNode.cpp.

MStatus MFnGenericAttribute::removeDataAccept

(

MFnData::Type

oldType

)

Remove one of the types that this attribute can accept.

Parameters:

[in]

oldType

old type that is no longer accepted

Returns:

Status code

Status Codes:

• MS::kSuccess operation successful
• MS::kFailure function set doesn not have valid object, or the remove failed

MStatus MFnGenericAttribute::removeNumericDataAccept

(

MFnNumericData::Type

oldType

)

Remove one of the types that this attribute can accept.

Parameters:

[in]

oldType

old type that is no longer accepted

Returns:

Status code

Status Codes:

• MS::kSuccess operation successful
• MS::kFailure function set doesn not have valid object, or the remove failed

MStatus MFnGenericAttribute::removeAccept

(

const MTypeId &

id

)

Remove one of the types that this attribute can accept. This method takes the type id (iff tag) of the data objects that can no longer be accepted.

Parameters:

[in]

id

id of old type that is no longer accepted

Returns:

Status code

Status Codes:

• MS::kSuccess operation successful
• MS::kFailure function set doesn not have valid object, or the remove failed

MStatus MFnGenericAttribute::addAccept

(

MFnData::Type

newType

)

Obsolete & no script support.

This method is obsolete. This method is not available in Python.

Deprecated:

Use the MFnGenericAttribute::addDataAccept method instead.

Parameters:

[in]

newType

MStatus MFnGenericAttribute::addAccept

(

MFnNumericData::Type

newType

)

Obsolete & no script support.

This method is obsolete. This method is not available in Python.

Deprecated:

Use the MFnGenericAttribute::addNumericDataAccept method instead.

Parameters:

[in]

newType

MStatus MFnGenericAttribute::removeAccept

(

MFnData::Type

oldType

)

Obsolete & no script support.

This method is obsolete. This method is not available in Python.

Deprecated:

Use the MFnGenericAttribute::removeDataAccept method instead.

Parameters:

[in]

oldType

MStatus MFnGenericAttribute::removeAccept

(

MFnNumericData::Type

oldType

)

Obsolete & no script support.

This method is obsolete. This method is not available in Python.

Deprecated:

Use the MFnGenericAttribute::removeNumericDataAccept method instead.

Parameters:

[in]

oldType