|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.
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.