Adobe Extending Dreamweaver CS4 Manuale Utente Scaricare il pdf (Pagina 361)

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EXTENDING DREAMWEAVER CS4

C-level extensibility

JSVal JS_ObjectToValue()

Description

This function stores an object return value in a JSVal. Use JS_ NewArrayObject() to create an array object; use

JS_SetElement() to define its contents.

Arguments

JSObject *obj

The obj argument is a pointer to the JSObject object that you want to convert to a JSVal structure.

Returns

A JSVal structure that contains the object that you passed to the function as an argument.

char *JS_ObjectType()

Description

Given an object reference, the JS_ObjectType() function returns the class name of the object. For example, if the

object is a DOM object, the function returns "

Document". If the object is a node in the document, the function returns

Element". For an array object, the function returns "Array".

Note: Do not modify the returned buffer pointer or you might corrupt the data structures of the JavaScript interpreter.

Arguments

JSObject *obj

Typically, this argument is passed in and converted using the JS_ValueToObject() function.

Returns

A pointer to a null-terminated string. The caller should not free this string when it finishes.

JSObject *JS_NewArrayObject()

Description

This function creates a new object that contains an array of JSVals.

Arguments

JSContext *cx, unsigned int length, JSVal *v

• The cx argument is the opaque JSContext pointer that passes to the JavaScript function.

• The length argument is the number of elements that the array can hold.

• The v argument is an optional pointer to the JSVals to be stored in the array. If the return value is not null, v is

an array that contains length elements. If the return value is

null, the initial content of the array object is undefined

and can be set using the

JS_SetElement() function.

Returns

A pointer to a new array object or the value null upon failure.

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Adobe Extending Dreamweaver CS4 Manuale Utente Pagina 361