3.2.5.2.1 One-Way Events

If this event occurs while the server is in the Accepting Messages state, the server moves into the Processing Message state and processes the one-way event. Otherwise, the event is queued until the server returns to the Accepting Messages state. (See figure in section 3.1.)

Once the event message has been processed (the local function has been called), the client returns to the Accepting Messages state. The return value is S_OK (0x00000000), or an appropriate error code from the set of error codes defined in section 2.2.2.5.