GUPnP.ServiceProxy.add_notify

### Method

# GUPnP ServiceProxyadd_notify

#### Declaration [src]

    gboolean
    gupnp_service_proxy_add_notify (
      GUPnPServiceProxy* proxy,
      const char* variable,
      GType type,
      GUPnPServiceProxyNotifyCallback callback,
      gpointer user_data
    )

#### Description [src]

Sets up `callback` to be called whenever a change notification for `variable` is recieved.

This method is not directly available to language bindings.
The implementation of this method is provided by `gupnp_service_proxy_add_notify_full()` in language bindings

#### Parameters

`variable` | `const char*`
| The variable to add notification for.
| The data is owned by the caller of the function.
| The value is a NUL terminated UTF-8 string.
`type` | `GType`
| The type of the variable.
`callback` | `GUPnPServiceProxyNotifyCallback`
| The callback to call when `variable` changes.
`user_data` | `gpointer`
| User data for `callback`.
| The argument can be `NULL`.
| The data is owned by the caller of the function.

#### Return value

Returns: | `gboolean`
| `TRUE` on success.