SystemEvents.DisplaySettingsChanged Kejadian

Definisi

Ruang nama:

Microsoft.Win32

Rakitan:

Microsoft.Win32.SystemEvents.dll

Paket:

Microsoft.Win32.SystemEvents v8.0.0

Sumber:

SystemEvents.cs

Terjadi ketika pengguna mengubah pengaturan tampilan.

public:
 static event EventHandler ^ DisplaySettingsChanged;

public static event EventHandler? DisplaySettingsChanged;

member this.DisplaySettingsChanged : EventHandler 

Public Shared Custom Event DisplaySettingsChanged As EventHandler 

Jenis Acara

EventHandler

Pengecualian

InvalidOperationException

Pemberitahuan peristiwa sistem tidak didukung di bawah konteks saat ini. Proses server, misalnya, mungkin tidak mendukung pemberitahuan peristiwa sistem global.

ExternalException

Upaya untuk membuat utas jendela peristiwa sistem tidak berhasil.

Contoh

Contoh kode berikut menunjukkan cara memantau DisplaySettingsChanged peristiwa. Contoh kode ini adalah bagian dari contoh yang lebih besar yang disediakan untuk SystemEvents kelas .

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

Keterangan

Perhatian

Karena ini adalah peristiwa statis, Anda harus melepaskan penanganan aktivitas Anda ketika aplikasi Anda dibuang, atau kebocoran memori akan dihasilkan.

Lihat juga

• DisplaySettingsChanging