Microsoft.Win32 (system.dll)delegate

This delegate receives the SystemEvents.UserPreferenceChanging event, which is similar to SystemEvents.UserPreferenceChanged, except it is raised as the event is changing, not after it has changed.

public delegate void UserPreferenceChangingEventHandler(object sender, 
UserPreferenceChangingEventArgs e);

Associated Events

SystemEvents.UserPreferenceChanging( )

    Part II: Programming with the .NET Framework
    Part IV: API Quick Reference
    Chapter 26. System