UserPreferenceChangingEventArgs Class
Provides data for the UserPreferenceChanging event.
Assembly: System (in System.dll)
The UserPreferenceChangingEventArgs type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | UserPreferenceChangingEventArgs | Initializes a new instance of the UserPreferenceChangingEventArgs class using the specified user preference category identifier. |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
A UserPreferenceChanging event occurs when a change to a user preference is about to be applied.
Note |
|---|
The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: MayLeakOnAbort. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes. |
The following code example demonstrates how to use the UserPreferenceChangingEventArgs type to monitor the UserPreferenceChanging event. This code example is part of a larger example provided for the SystemEvents class.
#using <System.dll> using namespace System; using namespace Microsoft::Win32; // This method is called when a user preference changes. void SystemEvents_UserPreferenceChanging(Object^ sender, UserPreferenceChangingEventArgs^ e) { Console::WriteLine("The user preference is changing. Category={0}", e->Category); } // This method is called when the palette changes. void SystemEvents_PaletteChanged(Object^ sender, EventArgs^ e) { Console::WriteLine("The palette changed."); } // This method is called when the display settings change. void SystemEvents_DisplaySettingsChanged(Object^ sender, EventArgs^ e) { Console::WriteLine("The display settings changed."); } int main() { // Set the SystemEvents class to receive event notification // when a user preference changes, the palette changes, or // when display settings change. SystemEvents::UserPreferenceChanging += gcnew UserPreferenceChangingEventHandler( SystemEvents_UserPreferenceChanging); SystemEvents::PaletteChanged += gcnew EventHandler(SystemEvents_PaletteChanged); SystemEvents::DisplaySettingsChanged += gcnew EventHandler(SystemEvents_DisplaySettingsChanged); // For demonstration purposes, this application sits idle // waiting for events. Console::WriteLine("This application is waiting for system events."); Console::WriteLine("Press <Enter> to terminate this application."); Console::ReadLine(); } // This code produces the following output. // // This app is waiting for system events. // Press <Enter> to terminate this application. // Display Settings changed. // User preference is changing. Category=General
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
