This interface is defines an item to be referenced in the AAF file. More...

Public Member Functions
HRESULT	Initialize ([in, ref] aafUID_constref id,[in, string] aafCharacter_constptr pName,[in, string] aafCharacter_constptr pDescription)
	Init all fields of a meta definition object.
HRESULT	GetAUID ([retval, out] aafUID_t *pAuid)
	Gets the AUID for this object.
HRESULT	SetName ([in, string] aafCharacter_constptr pName)
	Sets the Name of this definition.
HRESULT	GetName ([out, string, size_is(bufSize)] aafCharacter *pName,[in] aafUInt32 bufSize)
	Gets the Name of this definition.
HRESULT	GetNameBufLen ([out] aafUInt32 *pBufSize)
	Returns size of buffer (in bytes) required for GetName().
HRESULT	SetDescription ([in, string] aafCharacter_constptr pDescription)
	Sets the Description of this definition.
HRESULT	GetDescription ([out, string, size_is(bufSize)] aafCharacter *pDescription,[in] aafUInt32 bufSize)
	Gets the Description of this definition.
HRESULT	GetDescriptionBufLen ([out] aafUInt32 *pBufSize)
	Returns size of buffer (in bytes) required for GetDescription().

Detailed Description

This interface is defines an item to be referenced in the AAF file.

It specifies the AUID unique identifier used to define types used in AAF persistent objects.

In addition to the specific error results listed for each method, all methods in this interface may also return one of the following values:

AAFRESULT_NOMEMORY

insufficient system memory is available to perform the operation.

AAFRESULT_NOT_INITIALIZED

This object has not yet had Initialize() called on it through this object's primary interface. Note that IAAFObject is a primary interface for an abstract class, so it is not appropriate for the Initialize() method to exist in this interface. The Initialize() method is available through the concrete object's primary interface.

Definition at line 13651 of file AAF.idl.

Member Function Documentation

HRESULT IAAFMetaDefinition::GetAUID ( [retval, out] aafUID_t * pAuid )

Gets the AUID for this object.

Parameters:

pAuid [retval,out] Pointer to an AUID reference

HRESULT IAAFMetaDefinition::GetDescription	(	[out, string, size_is(bufSize)] aafCharacter *	pDescription,
		[in] aafUInt32	bufSize
	)

Gets the Description of this definition.

Writes the Description property, with a trailing null character, into the pDescription buffer. The buffer is allocated by the caller. The size of the buffer is given by bufSize. If the Description property has not yet been set, a zero-length string will be written (that is, only the trailing null character).

Caller may call GetDescriptionBufLen() to determine the required buffer size.

If this method fails nothing will be written to pDescription.

Succeeds if:

The pDescription pointer is valid.
bufSize indicates that the buffer is large enough to hold Description.

This method will return the following codes. If more than one of the listed errors is in effect, it will return the first one encountered in the order given below:

AAFRESULT_SUCCESS

succeeded. (This is the only code indicating success.)

AAFRESULT_NULL_PARAM

pDescription arg is NULL.

AAFRESULT_SMALL_BUF

bufSize indicates that the allocated buffer is not large enough to hold Description.

Parameters:

pDescription	[out, string, size_is(bufSize)] buffer into which Description is to be written
bufSize	[in] size of *pDescription buffer in bytes

HRESULT IAAFMetaDefinition::GetDescriptionBufLen ( [out] aafUInt32 * pBufSize )

Returns size of buffer (in bytes) required for GetDescription().

Succeeds if:

The pBufSize pointer is valid.

This method will return the following codes. If more than one of the listed errors is in effect, it will return the first one encountered in the order given below:

AAFRESULT_SUCCESS

succeeded. (This is the only code indicating success.)

AAFRESULT_NULL_PARAM

pBufSize arg is NULL.

Parameters:

pBufSize [out] size of required buffer, in bytes

HRESULT IAAFMetaDefinition::GetName	(	[out, string, size_is(bufSize)] aafCharacter *	pName,
		[in] aafUInt32	bufSize
	)

Gets the Name of this definition.

Writes the Name property, with a trailing null character, into the pName buffer. The buffer is allocated by the caller. The size of the buffer is given by bufSize. If the Name property has not yet been set, a zero-length string will be written (that is, only the trailing null character).

Caller may call GetNameBufLen() to determine the required buffer size.

If this method fails nothing will be written to pName.

Succeeds if:

The pName pointer is valid.
bufSize indicates that the buffer is large enough to hold Name.

This method will return the following codes. If more than one of the listed errors is in effect, it will return the first one encountered in the order given below:

AAFRESULT_SUCCESS

succeeded. (This is the only code indicating success.)

AAFRESULT_NULL_PARAM

pName arg is NULL.

AAFRESULT_SMALL_BUF

bufSize indicates that the allocated buffer is not large enough to hold Name.

Parameters:

pName	[out, string, size_is(bufSize)] buffer into which Name is to be written
bufSize	[in] size of *pName buffer in bytes

HRESULT IAAFMetaDefinition::GetNameBufLen ( [out] aafUInt32 * pBufSize )

Returns size of buffer (in bytes) required for GetName().

Succeeds if:

The pBufSize pointer is valid.

This method will return the following codes. If more than one of the listed errors is in effect, it will return the first one encountered in the order given below:

AAFRESULT_SUCCESS

succeeded. (This is the only code indicating success.)

AAFRESULT_NULL_PARAM

pBufSize arg is NULL.

Parameters:

pBufSize [out] size of required buffer, in bytes

HRESULT IAAFMetaDefinition::Initialize	(	[in, ref] aafUID_constref	id,
		[in, string] aafCharacter_constptr	pName,
		[in, string] aafCharacter_constptr	pDescription
	)

Init all fields of a meta definition object.

Parameters:

id	[in, ref] AUID for new DefObject
pName	[in, string] Name for new Meta Definition
pDescription	[in, string] the Description of this meta definition

HRESULT IAAFMetaDefinition::SetDescription ( [in, string] aafCharacter_constptr pDescription )

Sets the Description of this definition.

Set the Description property to the value specified in pDescription. A copy is made of the data so the caller retains ownership of the *pDescription buffer and is responsible for de-allocating it. There is no pre-set limit to the length of the name, other than available system memory or disk space.

Succeeds if all of the following are true:

the pDescription pointer is valid.

If this method fails the Description property will not be changed.

This method will return the following codes. If more than one of the listed errors is in effect, it will return the first one encountered in the order given below:

AAFRESULT_SUCCESS

succeeded. (This is the only code indicating success.)

AAFRESULT_NULL_PARAM

pDescription arg is NULL.

Parameters:

pDescription [in, string] buffer from which Description is to be read

HRESULT IAAFMetaDefinition::SetName ( [in, string] aafCharacter_constptr pName )

Sets the Name of this definition.

Set the Name property to the value specified in pName. A copy is made of the data so the caller retains ownership of the *pName buffer and is responsible for de-allocating it. There is no pre-set limit to the length of the name, other than available system memory or disk space.

Succeeds if all of the following are true:

the pName pointer is valid.

If this method fails the Name property will not be changed.

This method will return the following codes. If more than one of the listed errors is in effect, it will return the first one encountered in the order given below:

AAFRESULT_SUCCESS

succeeded. (This is the only code indicating success.)

AAFRESULT_NULL_PARAM

pName arg is NULL.

Parameters:

pName [in, string] buffer from which Name is to be read

Public Member Functions

Detailed Description

Member Function Documentation