DeviceThumbnail.ReadAsync(IBuffer, UInt32, InputStreamOptions) Méthode
Définition
Important
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Retourne un objet de lecteur d’octets asynchrone.
public:
virtual IAsyncOperationWithProgress<IBuffer ^, unsigned int> ^ ReadAsync(IBuffer ^ buffer, unsigned int count, InputStreamOptions options) = ReadAsync;IAsyncOperationWithProgress<IBuffer, uint32_t> ReadAsync(IBuffer const& buffer, uint32_t const& count, InputStreamOptions const& options);public IAsyncOperationWithProgress<IBuffer,uint> ReadAsync(IBuffer buffer, uint count, InputStreamOptions options);function readAsync(buffer, count, options)Public Function ReadAsync (buffer As IBuffer, count As UInteger, options As InputStreamOptions) As IAsyncOperationWithProgress(Of IBuffer, UInteger)Paramètres
- buffer
- IBuffer
Mémoire tampon dans laquelle l’opération de lecture asynchrone place les octets lus.
- count
-
UInt32
unsigned int
uint32_t
Nombre d'octets à lire.
- options
- InputStreamOptions
Spécifie le type de l’opération de lecture asynchrone.
Retours
Windows.Foundation.IAsyncOperationWithProgress<Windows.Storage.Streams.IBuffer,unsigned int>
IAsyncOperationWithProgress<IBuffer,uint32_t>
Opération asynchrone.
Implémente
M:Windows.Storage.Streams.IInputStream.ReadAsync(Windows.Storage.Streams.IBuffer,System.UInt32,Windows.Storage.Streams.InputStreamOptions)
M:Windows.Storage.Streams.IInputStream.ReadAsync(Windows.Storage.Streams.IBuffer,unsigned int,Windows.Storage.Streams.InputStreamOptions)
M:Windows.Storage.Streams.IInputStream.ReadAsync(Windows.Storage.Streams.IBuffer,uint32_t,Windows.Storage.Streams.InputStreamOptions)