pub unsafe extern "C" fn PhidgetHumiditySensor_setOnHumidityChangeHandler(
ch: PhidgetHumiditySensorHandle,
fptr: PhidgetHumiditySensor_OnHumidityChangeCallback,
ctx: *mut c_void,
) -> PhidgetReturnCodepub unsafe extern "C" fn PhidgetHumiditySensor_setOnHumidityChangeHandler(
ch: PhidgetHumiditySensorHandle,
fptr: PhidgetHumiditySensor_OnHumidityChangeCallback,
ctx: *mut c_void,
) -> PhidgetReturnCode