Microsoft DirectX 9.0


The CallWorker method signals the thread with a request.


DWORD CallWorker(
    DWORD dwParam



Request parameter. The derived class defines the meaning of the parameter.

Return Value

Returns a value that is defined by the derived class.


The CAMThread::GetRequest and CAMThread::CheckRequest methods retrieve the value of the dwParam parameter. The GetRequest method blocks until CallWorker is called.

This method blocks until the CAMThread::Reply method is called. The return value is the parameter given to Reply.

This method holds the CAMThread::m_AccessLock lock to serialize requests. Therefore, do call this method from the thread itself or from any member function that executes in the context of the thread.

See Also