Asynchronous request to complete aStatus when a configuration change occurs.

The request is completed when a new configuration has been set, either explicitly or by a render stage. Earlier render stages and the Window Server can use this to update their state.

Cancels a pending request to notify on configuration change.

If there is a pending notification request, the status value will be set to KErrCancelled and it will be completed. If there is no pending request for notification, the call will simply return.

Asynchronous request to complete aStatus when a change of display is detected.

The request is completed when the connectedness of the display changes, or when the set of available resolutions changes.

Cancels a pending request to notify on display change.

If there is a pending notification request, the status value will be set to KErrCancelled and it will be completed. If there is no pending request for notification, the call will simply return.