Returns the datatype of the next message found in the received named pipe local buffer.
function NextMessageType: TMessageType;
Use NextMessageType to retrieve the datatype of the next message found in the received named pipe local buffer.
NextMessageType is desined to work only with Oracle DBMS_PIPE communication package which is the case only if EventType property has been set to etPipe.
The return value of mtNone indicates that no more messages are found in the local buffer.
Note: This method is considered obsolete now. In newer projects use functionally equivalent NextItemType method instead.