OperatorEmulator Class

Operator Emulator.When the object is serialized out as xml, its qualified name is m:opEmu.

Inheritance Hierarchy

System.Object
  DocumentFormat.OpenXml.OpenXmlElement
    DocumentFormat.OpenXml.OpenXmlLeafElement
      DocumentFormat.OpenXml.Math.OnOffType
        DocumentFormat.OpenXml.Math.OperatorEmulator

Namespace:  DocumentFormat.OpenXml.Math
Assembly:  DocumentFormat.OpenXml (in DocumentFormat.OpenXml.dll)

Syntax

'Declaration
Public Class OperatorEmulator _
    Inherits OnOffType
'Usage
Dim instance As OperatorEmulator
public class OperatorEmulator : OnOffType

Remarks

[ISO/IEC 29500-1 1st Edition]

22.1.2.80 opEmu (Operator Emulator)

This element specifies the Operator Emulator property on box. When 1 or true, the box and its contents behave as a single operator and inherit the properties of an operator. This means, for example, that the character can serve as a point for a line break and can be aligned to other operators. (For more details on the properties of an operator, see Unicode Technical Report #25, §3.2.2 and §3.2.3, and Unicode Technical Note #28.) Operator Emulators are often used when one or more glyphs combine to form an operator, such as .

When the element is absent, the default value of the property is 0 meaning that this property is not applied.

When the element is present and the val attribute is absent, the default of the val attribute is 1 meaning that this property is applied.

[Example: The following equation uses an Operator Emulator:

Its XML representation is as follows:

<m:r>
<m:t>a</m:t>
</m:r>
<m:box>
<m:boxPr>
<m:opEmu m:val="1"/>
<m:aln/>
</m:boxPr>
  <m:e>
<m:r>
<m:t>==</m:t>
</m:r>
</m:e>
</m:box>
<m:r>
<m:t>b</m:t>
</m:r>

end example]

Parent Elements

boxPr (§22.1.2.14)

Attributes

Description

val (value)

Specifies a binary value for the property defined by the parent XML element.

A value of 1 or true specifies that the property shall be explicitly applied. This is the default value for this attribute, and is implied when the parent element is present.

A value of 0 or false specifies that the property shall be explicitly turned off. This is implied when the parent element is not present.

The possible values for this attribute are defined by the ST_OnOff simple type (§22.9.2.7).

[Note: The W3C XML Schema definition of this element’s content model (CT_OnOff) is located in §A.6.1. end note]

© ISO/IEC29500: 2008.

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.

See Also

Reference

OperatorEmulator Members

DocumentFormat.OpenXml.Math Namespace