handle_cancel
Description:
Signal emitted when a remote caller is invoking the Cancel D-Bus method.
If a signal handler returns true, it means the signal handler will handle the invocation (e.g. take a reference to
invocation and eventually call complete_cancel or
e.g. return_error on it) and no other signal handlers will
run. If no signal handler handles the invocation, the UNKNOWN_METHOD
error is returned.
Parameters:
| invocation |
Returns:
|
DBUS_METHOD_INVOCATION_HANDLED or |