IMFAttributes::GetBlobSize method
Retrieves the length of a byte array associated with a key.
Syntax
HRESULT GetBlobSize(
[in] REFGUID guidKey,
[out] UINT32 *pcbBlobSize
);
Parameters
- guidKey [in]
-
GUID that identifies which value to retrieve. The attribute type must be MF_ATTRIBUTE_BLOB.
- pcbBlobSize [out]
-
If the key is found and the value is a byte array, this parameter receives the size of the array, in bytes.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
The specified key was not found. |
|
The attribute value is not a byte array. |
Remarks
To get the byte array, call IMFAttributes::GetBlob.
This interface is available on the following platforms if the Windows Media Format 11 SDK redistributable components are installed:
- Windows XP with Service Pack 2 (SP2) and later.
- Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (October 2006 Update Rollup for Windows XP Media Center Edition) installed.
Requirements
|
Minimum supported client |
Windows Vista [desktop apps | Windows Store apps] |
|---|---|
|
Minimum supported server |
Windows Server 2008 [desktop apps | Windows Store apps] |
|
Header |
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Library |
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See also