SystemEvents.DisplaySettingsChanged 活動
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
當使用者更改顯示設定時會發生。
public:
static event EventHandler ^ DisplaySettingsChanged;public static event EventHandler? DisplaySettingsChanged;public static event EventHandler DisplaySettingsChanged;member this.DisplaySettingsChanged : EventHandler Public Shared Custom Event DisplaySettingsChanged As EventHandler 事件類型
例外狀況
目前情境下不支援系統事件通知。 例如，伺服器程序可能不支援全域系統事件通知。
嘗試建立系統事件視窗執行緒的嘗試未能成功。
範例
以下程式碼範例示範如何監控 DisplaySettingsChanged 事件。 此程式碼範例是本類別更大範例 SystemEvents 的一部分。
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();
}
static void Main()
{
// Set the SystemEvents class to receive event notification when a user
// preference changes, the palette changes, or when display settings change.
SystemEvents.UserPreferenceChanging += new
UserPreferenceChangingEventHandler(SystemEvents_UserPreferenceChanging);
SystemEvents.PaletteChanged += new
EventHandler(SystemEvents_PaletteChanged);
SystemEvents.DisplaySettingsChanged += new
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();
}
'Set the SystemEvents class to receive event notification
'when a user preference changes, the palette changes, or
'when display settings change.
AddHandler SystemEvents.UserPreferenceChanging, _
AddressOf SystemEvents_UserPreferenceChanging
AddHandler SystemEvents.PaletteChanged, _
AddressOf SystemEvents_PaletteChanged
AddHandler SystemEvents.DisplaySettingsChanged, _
AddressOf SystemEvents_DisplaySettingsChanged
備註
注意事項
由於這是靜態事件，應用程式被丟棄時必須分離事件處理器，否則會導致記憶體洩漏。
