通过

CSourceStream::CheckRequest

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Microsoft DirectShow 9.0

CSourceStream::CheckRequest

The CheckRequest method checks if there is a thread request, without blocking.

Syntax

  BOOL CheckRequest(
    Command *pCom
);

Parameters

pCom

Pointer to a variable that receives the value passed in the last call to the CAMThread::CallWorker method.

Return Value

Returns TRUE if there is a pending request, or FALSE otherwise.

Remarks

This method overrides the CAMThread::CheckRequest method to perform type-checking. The CSourceStream class defines the following enumerated type for the pCom parameter:

enum Command {CMD_INIT, CMD_PAUSE, CMD_RUN, CMD_STOP, CMD_EXIT};

Requirements

**  Header:** Declared in Source.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

See Also