LineDisplayWindow.TryDisplayStorageFileBitmapAtPointAsync 方法

定义

命名空间:

Windows.Devices.PointOfService

重载

TryDisplayStorageFileBitmapAtPointAsync(StorageFile, Point)	尝试在特定点异步显示存储文件中的位图。
TryDisplayStorageFileBitmapAtPointAsync(StorageFile, Point, Int32)	尝试在缩放到特定宽度的特定点异步显示存储文件中的位图。

TryDisplayStorageFileBitmapAtPointAsync(StorageFile, Point)

尝试在特定点异步显示存储文件中的位图。

public:
 virtual IAsyncOperation<bool> ^ TryDisplayStorageFileBitmapAtPointAsync(StorageFile ^ bitmap, Point offsetInPixels) = TryDisplayStorageFileBitmapAtPointAsync;

/// [Windows.Foundation.Metadata.Overload("TryDisplayStorageFileBitmapAtPointAsync")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<bool> TryDisplayStorageFileBitmapAtPointAsync(StorageFile const& bitmap, Point const& offsetInPixels);

[Windows.Foundation.Metadata.Overload("TryDisplayStorageFileBitmapAtPointAsync")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<bool> TryDisplayStorageFileBitmapAtPointAsync(StorageFile bitmap, Point offsetInPixels);

function tryDisplayStorageFileBitmapAtPointAsync(bitmap, offsetInPixels)

Public Function TryDisplayStorageFileBitmapAtPointAsync (bitmap As StorageFile, offsetInPixels As Point) As IAsyncOperation(Of Boolean)

参数

bitmap

StorageFile

要显示的位图。

offsetInPixels

Point

要从屏幕左上角偏移位图显示的像素数。 {0,0}

返回

IAsyncOperation<Boolean>

IAsyncOperation<bool>

如果成功显示位图，则返回 True;否则为 False。

属性

OverloadAttribute RemoteAsyncAttribute

Windows 要求

设备系列	Windows 10 Fall Creators Update (在 10.0.16299.0 中引入)
API contract	Windows.Foundation.UniversalApiContract (在 v5.0 中引入)

注解

如果 LineDisplayCapabilities.CanDisplayBitmaps 值为 False，则此方法将失败。

TryDisplayStorageFileBitmapAtPointAsync(StorageFile, Point, Int32)

尝试在缩放到特定宽度的特定点异步显示存储文件中的位图。

public:
 virtual IAsyncOperation<bool> ^ TryDisplayStorageFileBitmapAtPointAsync(StorageFile ^ bitmap, Point offsetInPixels, int widthInPixels) = TryDisplayStorageFileBitmapAtPointAsync;

/// [Windows.Foundation.Metadata.Overload("TryDisplayStorageFileBitmapAtPointWithWidthAsync")]
/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<bool> TryDisplayStorageFileBitmapAtPointAsync(StorageFile const& bitmap, Point const& offsetInPixels, int const& widthInPixels);

[Windows.Foundation.Metadata.Overload("TryDisplayStorageFileBitmapAtPointWithWidthAsync")]
[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<bool> TryDisplayStorageFileBitmapAtPointAsync(StorageFile bitmap, Point offsetInPixels, int widthInPixels);

function tryDisplayStorageFileBitmapAtPointAsync(bitmap, offsetInPixels, widthInPixels)

Public Function TryDisplayStorageFileBitmapAtPointAsync (bitmap As StorageFile, offsetInPixels As Point, widthInPixels As Integer) As IAsyncOperation(Of Boolean)

参数

bitmap

StorageFile

要显示的位图。

offsetInPixels

Point

要从屏幕左上角偏移位图显示的像素数。 {0,0}

widthInPixels

Int32

int

位图所需的宽度。 如果值为 0 像素，则每个屏幕点显示一个像素的位图， (未缩放) 。

返回

IAsyncOperation<Boolean>

IAsyncOperation<bool>

如果成功显示位图，则返回 True;否则为 False。

属性

OverloadAttribute RemoteAsyncAttribute

Windows 要求

设备系列	Windows 10 Fall Creators Update (在 10.0.16299.0 中引入)
API contract	Windows.Foundation.UniversalApiContract (在 v5.0 中引入)

注解

如果 LineDisplayCapabilities.CanDisplayBitmaps 值为 False，则此方法将失败。

如果提供的 widthInPixels 值大于 ClaimedLineDisplay.MaxBitmapSizeInPixels，此方法将失败。