|Microsoft DirectX 9.0|
The CheckRequest method checks if there is a request, without blocking.
BOOL CheckRequest( DWORD *pParam );
Pointer to a variable that receives the value passed in the last call to the CAMThread::CallWorker method.
Returns TRUE if there is a pending request, or FALSE otherwise.
This method is a non-blocking version of the CAMThread::GetRequest method.
If another thread is waiting on a call to CallWorker, this method retrieves the request parameter and returns TRUE. Otherwise, it returns FALSE. If the method returns TRUE, call the CAMThread::Reply method to release the requesting thread.