WPEJavaScriptCore.Class.add_methodv

### Method

# WPEJavaScriptCore Classadd_methodv

#### Declaration [src]

    void
    jsc_class_add_methodv (
      JSCClass* jsc_class,
      const char* name,
      GCallback callback,
      gpointer user_data,
      GDestroyNotify destroy_notify,
      GType return_type,
      guint n_parameters,
      GType* parameter_types
    )

#### Description [src]

Add method with `name` to `jsc_class`. When the method is called by JavaScript or jsc_value_object_invoke_method(), `callback` is called receiving the class instance as first parameter, followed by the method parameters and then `user_data` as last parameter. When the method is cleared in the `JSCClass` context, `destroy_notify` is called with `user_data` as parameter.

Note that the value returned by `callback` must be transfer full. In case of non-refcounted boxed types, you should use `G_TYPE_POINTER` instead of the actual boxed `GType` to ensure that the instance owned by `JSCClass` is used. If you really want to return a new copy of the boxed type, use #JSC_TYPE_VALUE and return a `JSCValue` created with `jsc_value_new_object()` that receives the copy as the instance parameter.

This method is renamed to `jsc_class_add_method()` in language bindings

#### Parameters

`name` | `const char*`
| The method name.
| The data is owned by the caller of the function.
| The value is a NUL terminated UTF-8 string.
`callback` | `GCallback`
| A `GCallback` to be called to invoke method `name` of `jsc_class`.
`user_data` | `gpointer`
| User data to pass to `callback`.
| The argument can be `NULL`.
| The data is owned by the caller of the function.
`destroy_notify` | `GDestroyNotify`
| Destroy notifier for `user_data`.
| The argument can be `NULL`.
`return_type` | `GType`
| The `GType` of the method return value, or `G_TYPE_NONE` if the method is void.
`n_parameters` | `guint`
| The number of parameter types to follow or 0 if the method doesn’t receive parameters.
`parameter_types` | An array of `GType`
| A list of `GType`s, one for each parameter, or `NULL`.
| The argument can be `NULL`.
| The length of the array is specified in the `n_parameters` argument.
| The data is owned by the caller of the function.