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This method acquires or releases a lock on the DMO. Call this method to keep the DMO serialized when performing multiple operations.
HRESULT Lock(LONGbLock);
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 Values
Returns an HRESULT value. Possible values include the following.
| Value | Description |
|---|---|
| S_OK | Success |
| E_FAIL | Failure |
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
OS Versions: Windows CE .NET 4.1 and later.
Header: Dmo.h.
Link Library: Dmoguid.lib.
See Also
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