Assembly: System.Windows.Forms (in system.windows.forms.dll)
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
The OnMaskChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.Notes to Inheritors: When overriding OnMaskChanged in a derived class, be sure to call the base class's OnMaskChanged method so that registered delegates receive the event.
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.