AudioFromFile Class
Audio from File.When the object is serialized out as xml, its qualified name is a:audioFile.
Inheritance Hierarchy
System.Object
DocumentFormat.OpenXml.OpenXmlElement
DocumentFormat.OpenXml.OpenXmlCompositeElement
DocumentFormat.OpenXml.Drawing.AudioFromFile
Namespace: DocumentFormat.OpenXml.Drawing
Assembly: DocumentFormat.OpenXml (in DocumentFormat.OpenXml.dll)
Syntax
声明
<ChildElementInfoAttribute(GetType(ExtensionList))> _
Public Class AudioFromFile _
Inherits OpenXmlCompositeElement
用法
Dim instance As AudioFromFile
[ChildElementInfoAttribute(typeof(ExtensionList))]
public class AudioFromFile : OpenXmlCompositeElement
Remarks
The following table lists the possible child types:
- ExtensionList <a:extLst>
[ISO/IEC 29500-1 第 1 个版本]
20.1.3.2 audioFile (Audio from File)
This element specifies the existence of an audio file. This element is specified within the non-visual properties of an object. The audio shall be attached to an object as this is how it is represented within the document. The actual playing of the audio however is done within the timing node list that is specified under the timing element.
[Example: Consider the following picture object that has an audio file attached to it.
<p:pic>
<p:nvPicPr>
<p:cNvPr id="7" name="Rectangle 6">
<a:hlinkClick r:id="" action="ppaction://media"/>
</p:cNvPr>
<p:cNvPicPr>
<a:picLocks noRot="1"/>
</p:cNvPicPr>
<p:nvPr>
<a:audioFile r:link="rId1"/>
</p:nvPr>
</p:nvPicPr>
…
</p:pic>
In the above example, we see that there is a single audioFile element attached to this picture. This picture is placed within the document just as a normal picture or shape would be. The id of this picture, namely 7 in this case, is used to refer to this audioFile element from within the timing node list. The Linked relationship id is used to retrieve the actual audio file for playback purposes. end example]
Parent Elements |
|---|
nvPr (§19.3.1.33) |
Child Elements |
Subclause |
|---|---|
extLst (Extension List) |
§20.1.2.2.15 |
Attributes |
Description |
|---|---|
contentType (Content Type of Linked Audio File) |
Specifies the content type for the external file that is referenced by this element. Content types define a media type, a subtype, and an optional set of parameters, as defined in Part 2. If a rendering application cannot process external content of the content type specified, then the specified content can be ignored. [Note: A list of suggested audio types is provided in §15.2.2. end note] If this attribute is omitted, application should attempt to determine the content type by reading the contents of the relationship's target. A producer that wants interoperability should use the following standard format:
The possible values for this attribute are defined by the W3C XML Schema string datatype. |
link (Linked Relationship ID) Namespace: .../officeDocument/2006/relationships |
Specifies the identification information for a linked object. This attribute is used to specify the location of an object that does not reside within this file. The possible values for this attribute are defined by the ST_RelationshipId simple type (§22.8.2.1). |
[Note: The W3C XML Schema definition of this element's content model (CT_AudioFile) is located in §A.4.1. end note]
© ISO/IEC29500: 2008. 以上摘要已经由 Microsoft（和/或其代理公司）从英语翻译为简体中文，ISO 对此翻译不承担任何责任。
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.