IMediaObject::Lock

A version of this page is also available for

Windows Embedded CE 6.0 R3

4/8/2010

This method acquires or releases a lock on the DMO. Call this method to keep the DMO serialized when performing multiple operations.

Syntax

HRESULT Lock(
  LONG bLock
);

Parameters

• bLock
  Value that specifies whether to acquire or release the lock. If the value is nonzero, a lock is acquired. If the value is zero, the lock is released.

Return Value

Returns an HRESULT value. Possible values include the following.

Remarks

This method prevents other threads from calling methods on the DMO. If another thread calls a method on the DMO, the thread blocks until the lock is released.

Requirements

See Also

Reference

IMediaObject