device_send_signal_condition
device_send_signal_condition (device, condition_name, condition_details);
void device_send_signal_condition (HalDevice *device,
device_send_signal_condition(d, "ButtonPressed", "power");
device_send_signal_condition(d, "ButtonPressed",
device_send_signal_condition(d, "ButtonPressed",
device_send_signal_condition(d, "ButtonPressed", "lid");