gupnp_control_point_callback_set Set control point callback &reftitle.description; boolgupnp_control_point_callback_set resourcecpoint intsignal mixedcallback mixedarg Set control point callback function for signal. &reftitle.parameters; cpoint A control point identifier, returned by gupnp_control_point_new. signal The value of signal. Signal can be one of the following values: GUPNP_SIGNAL_DEVICE_PROXY_AVAILABLE Emitted whenever a new device has become available. GUPNP_SIGNAL_DEVICE_PROXY_UNAVAILABLE Emitted whenever a device is not available any more. GUPNP_SIGNAL_SERVICE_PROXY_AVAILABLE Emitted whenever a new service has become available. GUPNP_SIGNAL_SERVICE_PROXY_UNAVAILABLE Emitted whenever a service is not available any more. callback The callback function for the certain signal. Typically, callback function takes on two parameters. The proxy parameter's identifier being the first, and the arg second. arg User data for callback. &reftitle.returnvalues; &return.success; &reftitle.examples; ]]> &reftitle.errors; Issues E_WARNING with not valid callback function. &reftitle.seealso; gupnp_control_point_new gupnp_control_point_browse_start