QWSServer Class Reference
[QtGui module]

void QWSServer::setScreenSaverBlockLevel ( int eventBlockLevel )   [static]

Block the key or mouse event that wakes the system from level eventBlockLevel or higher. To completely disable event blocking (the default behavior), set eventBlockLevel to -1.

The algorithm blocks the "down", "up" as well as any "repeat" events for the same key but will not block other key events after the initial "down" event. For mouse events, the algorithm blocks all mouse events until an event with no buttons pressed is received.

There are 2 keys that are never blocked, Qt::Key_F34 (POWER) and Qt::Key_F35 (LIGHT).

Example usage:

 bool MyScreenSaver::save( int level )
 {
     switch ( level ) {
         case 0:
             if ( dim_enabled ) {
                 // dim the screen
             }
             return true;
         case 1:
             if ( screenoff_enabled ) {
                 // turn off the screen
             }
             return true;
         case 2:
             if ( suspend_enabled ) {
                 // suspend
             }
             return true;
         default:
             return false;
     }
 }

 ...

 int timings[4];
 timings[0] = 5000;  // dim after 5 seconds
 timings[1] = 10000; // light off after 15 seconds
 timings[2] = 45000; // suspend after 60 seconds
 timings[3] = 0;
 QWSServer::setScreenSaverIntervals( timings );

 // ignore the key/mouse event that turns on the screen
 int blocklevel = 1;
 if ( !screenoff_enabled ) {
     // screenoff is disabled, ignore the key/mouse event that wakes from suspend
     blocklevel = 2;
     if ( !suspend_enabled ) {
         // suspend is disabled, never ignore events
         blocklevel = -1;
     }
 }
 QWSServer::setScreenSaverBlockLevel( blocklevel );

Note that this function can only be used in the server process.

See also setScreenSaverIntervals() and setScreenSaverInterval().