MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Spécifications télécharger pdf (Page 464)

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464 C-Level Extensibility

■ The bp argument is a pointer to a JSBool Boolean value. This function stores the

converted value in

*bp.

Returns

A Boolean value: JS_TRUE indicates success; JS_FALSE indicates failure.

JSBool JS_ValueToObject()

Description

This function extracts a function argument from a jsval structure, converts it to an object (if

possible), and passes the converted value back to the caller. If the object is an array, use

JS_GetArrayLength() and JS_GetElement() to read its contents.

Arguments

JSContext *cx, jsval v, JSObject **op

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

■ The v argument is the jsval structure from which the object is to be extracted.

■ The op argument is a pointer to a JSObject pointer. This function stores the converted

value in

*op.

Returns

A Boolean value: JS_TRUE indicates success; JS_FALSE indicates failure.

JSBool JS_StringToValue()

Description

This function stores a string return value in a jsval structure. It allocates a new JavaScript

string object.

Arguments

JSContext *cx, char *bytes, size_t sz, jsval *vp

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

■ The bytes argument is the string to be stored in the jsval structure. The string data is

copied, so the caller should free the string when it is not needed. If the string size is not

specified (see the

sz argument), the string must be null-terminated.

■ The sz argument is the size of the string, in bytes. If sz is 0, the length of the

null-terminated string is computed automatically.

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MACROMEDIA DREAMWEAVER MX 2004-EXTENDING DREAMWEAVER Spécifications Page 464

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