Sorry for posting many mal-encoded message here. here are someting from palm docs: In a few instances, you might need to prevent the system from going to sleep. For example, your code might be in the middle of performing some lengthy computation or in the middle of attempting a network connection. If so, register for the sysNotifySleepRequestEvent instead. This notification informs all clients that the system might go to sleep. If necessary, your handler can delay the sleep request by doing the following: ((SleepEventParamType *) (notify->notifyDetailsP))->deferSleep++; The system checks the deferSleep value when each notification handler returns. If it is nonzero, it cancels the sleep event. After you defer sleep, your code is free to finish what it was doing. When it is finished, you must allow the system to continue with the sleep event. To do so, create a keyDownEvent with the resumeSleepChr and the command key bit set (to signal that the character is virtual) and add it to the event queue. When the system receives this event, it will again broadcast the sysNotifySleepRequestEvent to all clients. If deferSleep is 0 after all clients return, then the system knows it is safe to go to
sleep, and it broadcasts the sysNotifySleepNotifyEvent to all of its clients. -- For information on using the PalmSource Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
