MFGetAttributesAsBlobSize function (mfapi.h)

Retrieves the size of the buffer needed for the MFGetAttributesAsBlob function.

Syntax

HRESULT MFGetAttributesAsBlobSize(
  [in]  IMFAttributes *pAttributes,
  [out] UINT32        *pcbBufSize
);

[in] pAttributes

Pointer to the IMFAttributes interface of the attribute store.

[out] pcbBufSize

Receives the required size of the array, in bytes.

The function returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The function succeeded.

Use this function to find the size of the array that is needed for the MFGetAttributesAsBlob function.

Requirement	Value
Minimum supported client	Windows Vista [desktop apps \| UWP apps]
Minimum supported server	Windows Server 2008 [desktop apps \| UWP apps]
Target Platform	Windows
Header	mfapi.h
Library	Mfplat.lib
DLL	Mfplat.dll