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IMFAttributes::LockStore method

Locks the attribute store so that no other thread can access it. If the attribute store is already locked by another thread, this method blocks until the other thread unlocks the object. After calling this method, call IMFAttributes::UnlockStore to unlock the object.

Syntax


HRESULT LockStore();

Parameters

This method has no parameters.

Return value

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

Return codeDescription
S_OK

The method succeeded.

 

Remarks

This method can cause a deadlock if a thread that calls LockStore waits on a thread that calls any other IMFAttributes methods on the same object.

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

Mfobjects.h (include Mfidl.h)

Library

Mfuuid.lib

See also

IMFAttributes
Attributes and Properties

 

 

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