ClaimedBarcodeScanner.ShowVideoPreviewAsync 方法

定义

命名空间:

Windows.Devices.PointOfService

显示视频预览窗口。

public:
 virtual IAsyncOperation<bool> ^ ShowVideoPreviewAsync() = ShowVideoPreviewAsync;

/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<bool> ShowVideoPreviewAsync();

[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<bool> ShowVideoPreviewAsync();

function showVideoPreviewAsync()

Public Function ShowVideoPreviewAsync () As IAsyncOperation(Of Boolean)

返回

IAsyncOperation<Boolean>

IAsyncOperation<bool>

如果显示视频预览，则为 True;如果视频预览未显示或不受支持，则为 false。

属性

RemoteAsyncAttribute

Windows 要求

设备系列	Windows 10, version 1803 (在 10.0.17134.0 中引入)
API contract	Windows.Foundation.UniversalApiContract (在 v6.0 中引入)