DataProviderRequest.GetDeferral 메서드

정의

네임스페이스:

Windows.ApplicationModel.DataTransfer

DataProviderDeferral 개체를 반환합니다.

public:
 virtual DataProviderDeferral ^ GetDeferral() = GetDeferral;

DataProviderDeferral GetDeferral();

public DataProviderDeferral GetDeferral();

function getDeferral()

Public Function GetDeferral () As DataProviderDeferral

반환

DataProviderDeferral

데이터 공급자 지연 개체입니다.

예제

async void OnDeferredImageRequestedHandler(DataProviderRequest request)
{
    // Provide updated bitmap data using delayed rendering.
    if (this.imageStream != null)
    {
        DataProviderDeferral deferral = request.GetDeferral();
        InMemoryRandomAccessStream inMemoryStream = new InMemoryRandomAccessStream();

        // Decode the image.
        BitmapDecoder imageDecoder = await BitmapDecoder.CreateAsync(this.imageStream);

        // Re-encode the image at 50% width and height.
        BitmapEncoder imageEncoder = await BitmapEncoder.CreateForTranscodingAsync(inMemoryStream, imageDecoder);
        imageEncoder.BitmapTransform.ScaledWidth = (uint)(imageDecoder.OrientedPixelHeight * 0.5);
        imageEncoder.BitmapTransform.ScaledHeight = (uint)(imageDecoder.OrientedPixelHeight * 0.5);
        await imageEncoder.FlushAsync();

        request.SetData(RandomAccessStreamReference.CreateFromStream(inMemoryStream));
        deferral.Complete();
    }
}

설명

자세한 내용은 요청된 데이터를 비동기적으로 생성하는 방법을 검사.