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IActiveScriptProperty::GetProperty

  • Article

Gets the property that is specified by the parameter.

Syntax

HRESULT GetProperty(  
// The property value:  
    uint dwProperty,    
// Not used:  
    IntPtr pvarIndex,    
// The value of the property:   
    out object pvarValue,    
);

Parameters

dwProperty
The property value to get.

pvarIndex
Not used.

pvarValue
The value of the property.

The values allowed for dwProperty are described in the following table.

Constant Value Meaning
SCRIPTPROP_INTEGERMODE 0x00003000 Forces the scripting engine to divide in integer mode instead of floating point mode.
SCRIPTPROP_STRINGCOMPAREINSTANCE 0x00003001 Allows the string compare function of the scripting engine to be replaced.
SCRIPTPROP_ABBREVIATE_GLOBALNAME_RESOLUTION 0x70000002 Informs the scripting engine that no other scripting engines exist to contribute to the global object.
SCRIPTPROP_INVOKEVERSIONING 0x00004000 Forces the JavaScript scripting engine to select a set of language features to be supported. The default set of language features supported by the JavaScript scripting engine is equivalent to the language feature set that appeared in version 5.7 of the JavaScript scripting engine.

Return Value

Returns one of the following values:

Return Value Meaning
S_OK Success.
E_INVALIDARG An argument is not valid.
E_UNEXPECTED The call was not expected (for example, the scripting engine has not yet been loaded or initialized).

Remarks

The host can use the SCRIPTPROP_ABBREVIATE_GLOBALNAME_RESOLUTION property to inform a scripting engine that no other scripting engines exist to contribute to the global object. For example, Internet Explorer can inform the JavaScript engine that the page being rendered contains only JavaScript scripts. Thus, only the JavaScript engine can add new properties to the global object window, and there is no Visual Basic Scripting Edition (VBScript) engine to do the same. The engine can ignore this flag or can use it to optimize the management of new members that are added to the global object.

The host can use the SCRIPTPROP_INVOKEVERSIONING property to select the set of language features to be supported when the JavaScript scripting engine is started. If this property is set to 1 (SCRIPTLANGUAGEVERSION_5_7), the available language features are the same as those that appeared in version 5.7 of the JavaScript scripting engine. If it is set to 2 (SCRIPTLANGUAGEVERSION_5_8), the available language features are those that appeared in version 5.7 in addition to features that were added in version 5.8. By default, this property is set to 0 (SCRIPTLANGUAGEVERSION_DEFAULT), which is equivalent to the language feature set that appeared in version 5.7, unless the host supports a different default behavior. For instance, Internet Explorer 8 opts into the JavaScript language features supported by the version 5.8 JavaScript scripting engine by default when the document mode for Internet Explorer 8 is "Internet Explorer 8 Standards" mode.

See also

Defining Document Compatibility
IActiveScriptProperty
Version Information