JpegBitmapDecoder Class

Reference

Definition

Namespace:: System.Windows.Media.Imaging

Assembly:: PresentationCore.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Defines a decoder for Joint Photographics Experts Group (JPEG) encoded images.

public ref class JpegBitmapDecoder sealed : System::Windows::Media::Imaging::BitmapDecoder

public sealed class JpegBitmapDecoder : System.Windows.Media.Imaging.BitmapDecoder

type JpegBitmapDecoder = class
    inherit BitmapDecoder

Public NotInheritable Class JpegBitmapDecoder
Inherits BitmapDecoder

Inheritance: Object

DispatcherObject

BitmapDecoder
JpegBitmapDecoder

Remarks

The following table list the PixelFormats that are supported by the JpegBitmapDecoder class.

Supplied PixelFormat	Decodes to PixelFormat
Gray8	Gray8
Rgb24	Rgb24

Constructors

JpegBitmapDecoder(Stream, BitmapCreateOptions, BitmapCacheOption)	Initializes a new instance of the JpegBitmapDecoder class from the specified file stream, with the specified `createOptions` and `cacheOption`.
JpegBitmapDecoder(Uri, BitmapCreateOptions, BitmapCacheOption)	Initializes a new instance of the JpegBitmapDecoder class from the specified Uri, with the specified `createOptions` and `cacheOption`.

Properties

CodecInfo	Gets information that describes this codec. (Inherited from BitmapDecoder)
ColorContexts	Gets a value that represents the color profile associated with a bitmap, if one is defined. (Inherited from BitmapDecoder)
Dispatcher	Gets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject)
Frames	Gets the content of an individual frame within a bitmap. (Inherited from BitmapDecoder)
IsDownloading	Gets a value that indicates if the decoder is currently downloading content. (Inherited from BitmapDecoder)
Metadata	Gets an instance of BitmapMetadata that represents the global metadata associated with this bitmap, if metadata is defined. (Inherited from BitmapDecoder)
Palette	Gets the BitmapPalette associated with this decoder. (Inherited from BitmapDecoder)
Preview	Gets a BitmapSource that represents the global preview of this bitmap, if one is defined. (Inherited from BitmapDecoder)
Thumbnail	Gets a BitmapSource that represents the thumbnail of the bitmap, if one is defined. (Inherited from BitmapDecoder)

Methods

CheckAccess()	Determines whether the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject)
CreateInPlaceBitmapMetadataWriter()	Creates an instance of InPlaceBitmapMetadataWriter, which can be used to update the metadata of a bitmap. (Inherited from BitmapDecoder)
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Converts the current value of a BitmapDecoder to a String. (Inherited from BitmapDecoder)
VerifyAccess()	Enforces that the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject)

Events

DownloadCompleted	Occurs when a BitmapDecoder has finished downloading bitmap content. (Inherited from BitmapDecoder)
DownloadFailed	Occurs when bitmap content failed to download. (Inherited from BitmapDecoder)
DownloadProgress	Occurs when a BitmapDecoder has made progress downloading bitmap content. (Inherited from BitmapDecoder)

Applies to

แชร์ผ่าน