CSource::pStateLock

Retrieves a pointer to the filter-critical section.

CCritSec* pStateLock(void);

Parameters

None.

Return Values

Returns the critical section.

Remarks

Locking consists of holding the filter-critical section by calling the pStateLock member function and using the returned object to serialize access to functions. Typically, this lock can be held by a function when the worker thread might want to hold it. Therefore, to access a shared state from the worker thread, add another critical-section object. The exception occurs during the processing loop of the thread when it is safe to retrieve the filter-critical section from within CSourceStream::FillBuffer.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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Last updated on Wednesday, April 13, 2005

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