PlayToConnectionStateChangedEventArgs Kelas
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Menyediakan informasi tentang peristiwa StateChanged .
public ref class PlayToConnectionStateChangedEventArgs sealed
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.Deprecated("PlayToConnectionStateChangedEventArgs may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class PlayToConnectionStateChangedEventArgs final
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Deprecated("PlayToConnectionStateChangedEventArgs may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
class PlayToConnectionStateChangedEventArgs final
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.Deprecated("PlayToConnectionStateChangedEventArgs may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class PlayToConnectionStateChangedEventArgs
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Deprecated("PlayToConnectionStateChangedEventArgs may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
public sealed class PlayToConnectionStateChangedEventArgs
Public NotInheritable Class PlayToConnectionStateChangedEventArgs
- Warisan
- Atribut
Persyaratan Windows
Rangkaian perangkat |
Windows 10 (diperkenalkan dalam 10.0.10240.0)
|
API contract |
Windows.Foundation.UniversalApiContract (diperkenalkan dalam v1.0)
|
Contoh
private Windows.Media.PlayTo.PlayToManager ptm =
Windows.Media.PlayTo.PlayToManager.GetForCurrentView();
protected override void OnNavigatedTo(NavigationEventArgs e)
{
ptm.SourceRequested += sourceRequestHandlerWithEvents;
ptm.SourceSelected += sourceSelectedHandler;
}
private void sourceRequestHandlerWithEvents(
Windows.Media.PlayTo.PlayToManager sender,
Windows.Media.PlayTo.PlayToSourceRequestedEventArgs e)
{
try
{
var controller = mediaElement.PlayToSource;
controller.Connection.Error += playToConnectionError;
controller.Connection.StateChanged += playToConnectionStageChanged;
controller.Connection.Transferred += playToConnectionTransferred;
e.SourceRequest.SetSource(controller);
}
catch (Exception ex)
{
messageBlock.Text += "Exception encountered: " + ex.Message + "\n";
}
}
// Called when the user selects a Play To device to stream to.
private void sourceSelectedHandler(
Windows.Media.PlayTo.PlayToManager sender,
Windows.Media.PlayTo.PlayToSourceSelectedEventArgs e)
{
if (mediaElement.Name == "iplayer") {
if (!e.SupportsImage) {
messageBlock.Text += e.FriendlyName + " does not support streaming images. " +
"Please select a different device.";
return;
}
}
if (mediaElement.Name == "vplayer") {
if (!e.SupportsVideo) {
messageBlock.Text += e.FriendlyName + " does not support streaming video. " +
"Please select a different device.";
return;
}
}
if (mediaElement.Name == "aplayer") {
if (!e.SupportsAudio) {
messageBlock.Text += e.FriendlyName + " does not support streaming audio. " +
"Please select a different device.";
return;
}
}
Windows.Storage.Streams.IRandomAccessStream iconStream = e.Icon;
Windows.UI.Xaml.Media.Imaging.BitmapImage iconBitmap =
new Windows.UI.Xaml.Media.Imaging.BitmapImage();
iconBitmap.SetSource(iconStream);
playToDeviceIconImage.Source = iconBitmap;
playToDeviceFriendlyNameBlock.Text = e.FriendlyName;
}
private void playToConnectionError(
Windows.Media.PlayTo.PlayToConnection connection,
Windows.Media.PlayTo.PlayToConnectionErrorEventArgs e)
{
if (e.Code == Windows.Media.PlayTo.PlayToConnectionError.DeviceError ||
e.Code == Windows.Media.PlayTo.PlayToConnectionError.DeviceNotResponding)
{
messageBlock.Text += "Error occurred. Disconnecting.\n";
}
messageBlock.Text += "Error: Message = " + e.Message.ToString() + "\n";
}
private void playToConnectionStageChanged(
Windows.Media.PlayTo.PlayToConnection connection,
Windows.Media.PlayTo.PlayToConnectionStateChangedEventArgs e)
{
messageBlock.Text += "StateChanged: PreviousState = " + e.PreviousState.ToString() + "\n";
messageBlock.Text += "StateChanged: CurrentState = " + e.CurrentState.ToString() + "\n";
}
private void playToConnectionTransferred(
Windows.Media.PlayTo.PlayToConnection connection,
Windows.Media.PlayTo.PlayToConnectionTransferredEventArgs e)
{
messageBlock.Text += "Transferred: PreviousSource = " + e.PreviousSource.ToString() + "\n";
messageBlock.Text += "Transferred: CurrentSource = " + e.CurrentSource.ToString() + "\n";
}
Private ptm As Windows.Media.PlayTo.PlayToManager =
Windows.Media.PlayTo.PlayToManager.GetForCurrentView()
Protected Overrides Sub OnNavigatedTo(e As Navigation.NavigationEventArgs)
AddHandler ptm.SourceRequested, AddressOf sourceRequestHandlerWithEvents
AddHandler ptm.SourceSelected, AddressOf sourceSelectedHandler
End Sub
Private Sub sourceRequestHandlerWithEvents(
sender As Windows.Media.PlayTo.PlayToManager,
e As Windows.Media.PlayTo.PlayToSourceRequestedEventArgs)
Try
Dim controller = mediaElement.PlayToSource
AddHandler controller.Connection.Error, AddressOf playToConnectionError
AddHandler controller.Connection.StateChanged, AddressOf playToConnectionStageChanged
AddHandler controller.Connection.Transferred, AddressOf playToConnectionTransferred
e.SourceRequest.SetSource(controller)
Catch ex As Exception
messageBlock.Text &= "Exception encountered: " & ex.Message & vbCrLf
End Try
End Sub
' Called when the user selects a Play To device to stream to.
Private Sub sourceSelectedHandler(
sender As Windows.Media.PlayTo.PlayToManager,
e As Windows.Media.PlayTo.PlayToSourceSelectedEventArgs)
If mediaElement.Name = "iplayer" Then
If Not e.SupportsImage Then
messageBlock.Text &= e.FriendlyName & " does not support streaming images. " &
"Please select a different device."
Return
End If
End If
If mediaElement.Name = "vplayer" Then
If Not e.SupportsVideo Then
messageBlock.Text &= e.FriendlyName & " does not support streaming video. " &
"Please select a different device."
Return
End If
End If
If mediaElement.Name = "aplayer" Then
If Not e.SupportsAudio Then
messageBlock.Text &= e.FriendlyName & " does not support streaming audio. " &
"Please select a different device."
Return
End If
End If
Dim iconStream = e.Icon
Dim iconBitmap = New Windows.UI.Xaml.Media.Imaging.BitmapImage()
iconBitmap.SetSource(iconStream)
playToDeviceIconImage.Source = iconBitmap
playToDeviceFriendlyNameBlock.Text = e.FriendlyName
End Sub
Private Sub playToConnectionError(
connection As Windows.Media.PlayTo.PlayToConnection,
e As Windows.Media.PlayTo.PlayToConnectionErrorEventArgs)
If e.Code = Windows.Media.PlayTo.PlayToConnectionError.DeviceError OrElse
e.Code = Windows.Media.PlayTo.PlayToConnectionError.DeviceNotResponding Then
messageBlock.Text &= "Error occurred. Disconnecting." & vbCrLf
End If
messageBlock.Text &= "Error: Message = " & e.Message.ToString() & vbCrLf
End Sub
Private Sub playToConnectionStageChanged(
connection As Windows.Media.PlayTo.PlayToConnection,
e As Windows.Media.PlayTo.PlayToConnectionStateChangedEventArgs)
messageBlock.Text &= "StateChanged: PreviousState = " & e.PreviousState.ToString() & vbCrLf
messageBlock.Text &= "StateChanged: CurrentState = " & e.CurrentState.ToString() & vbCrLf
End Sub
Private Sub playToConnectionTransferred(
connection As Windows.Media.PlayTo.PlayToConnection,
e As Windows.Media.PlayTo.PlayToConnectionTransferredEventArgs)
messageBlock.Text &= "Transferred: PreviousSource = " & e.PreviousSource.ToString() & vbCrLf
messageBlock.Text &= "Transferred: CurrentSource = " & e.CurrentSource.ToString() & vbCrLf
End Sub
Keterangan
Untuk contoh cara menggunakan Play To dalam aplikasi, lihat PlayReady DRM.
Properti
CurrentState |
Mendapatkan status saat ini setelah status sambungan Putar Ke berubah. |
PreviousState |
Mendapatkan status sebelumnya sebelum status koneksi Putar Ke diubah. |
Berlaku untuk
Lihat juga
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