Поделиться через

ISAXXMLReader::getProperty Method (Windows Embedded CE 6.0)

  • Статья

1/6/2010

This method returns the value of a property. The property name is any qualified Uniform Resource Identifier (URI).

Syntax

HRESULT getProperty(
  const wchar_t* pwchName,
  VARIANT* pvarValue
);

Parameters

  • pwchName
    [in] Pointer to the property's name (zero-terminated Unicode string).
  • pvarValue
    [out, retval] Pointer to the corresponding data type for the property.

Return Value

The following table lists the return values for the getProperty method.

Property Returns

lexical-handlerdeclaration-handler

S_OK — The current value is returned.

"xmldecl-encoding""xmldecl-version""xmldecl-standalone"

S_OK — The current value is parsed.

E_FAIL — Not parsing.

dom-nodexml-string

S_OK — An empty value is returned.

Other properties

E_INVALIDARG — The property is not recognized.

Remarks

It is possible for a reader to recognize a property name but not be able to return its state. Although a core set of properties is defined, a reader is not required to recognize specific property names. Some property values may be available only in a specific context, such as before, during, or after a parse.

The ISAXXMLReader interface recognizes the following properties:

  • "http://xml.org/sax/properties/lexical-handler"
    This is an optional extension handler for lexical events like comments with the following settings:
    • Data type
      ISAXXMLLexicalHandler.
    • Access
      Read/write.
  • "http://xml.org/sax/properties/declaration-handler"
    This is an optional extension handler for declaration events with the following settings:
    • Data type
      ISAXXMLDeclHandler.
    • Access
      Read/write.
  • "xmldecl-encoding"
    Encoding declared in the XML header of the currently parsed document. This data is unavailable until the reader parses the XML header. This property has the following settings:
    • Data type
      BSTR*.
    • Default
      Empty if there is no XML declaration or if a property is not found.
    • Access
      Read for parsing; none when non-parsing.
  • "xmldecl-version"
    Version declared in the XML header of currently parsed document. This data is unavailable until the reader parses the XML header. This property has the following settings:
    • Data type
      BSTR*.
    • Default
      Empty if there is no XML declaration.
    • Access
      Read for parsing; none when non-parsing.
  • "xmldecl-standalone"
    Declared in the XML header of currently parsed document. This data is unavailable until the reader parses the XML header. This property has the following settings:
    • Data type
      BSTR* ("yes" or "no").
    • Default
      Empty if there is no XML declaration or if a property was not found.
    • Access
      Read for parsing; none when non-parsing.

The "xmldecl-encoding", "xmldecl-version", and "xmldecl-standalone" properties provide information about the presence and content of the XML header. However, XML header information was designed for low-level reader and parser use, not for applications.

Requirements

Header msxml2.h, msxml2.idl
Library uuid.lib
Windows Embedded CE Windows CE .NET 4.0 and later

See Also

Reference

ISAXXMLReader
ISAXXMLReader::putProperty Method