RSC/MP 7.2 Programming Manual

API Function Descriptions
HP NonStop Remote Server Call (RSC/MP) Programming Manual—522360-004
10-28
RscNotifyWin [RSCNOT]
If your application uses multiple concurrent RSC/MP sessions, then you must plan
window notifications carefully. Because a window notification message does not
identify the connection or session handle against which an I/O operation completes,
your application should use a unique window handle or unique message number for
each session that enables I/O notifications. The same guideline applies for UMS
notifications.
If RSC/MP fails to post a notification message to a window’s message queue because
the queue is full, RSC/MP queues notifications internally and repeatedly attempts
delivery until all notifications have been delivered successfully. However, if an
application’s window is found not to exist, notifications are dropped without any error
indication.
Note. Windows message notifications cannot be delivered to applications that run under
Terminal Services, or to any application when RSC/MP runs as a service.