Cancels the variable change notification for callback and user_data.
Up to version 0.20.9 this function must not be called directlya or indirectly from a ServiceProxyNotifyCallback associated with this service proxy, even if it is for another variable. In later versions such calls are allowed.
| this | |
| variable |
The variable to add notification for |
| callback |
The callback to call when |
| user_data |
User data for |
|
true on success. |