pub type PhidgetFrequencyCounter_OnCountChangeCallback = Option<unsafe extern "C" fn(ch: PhidgetFrequencyCounterHandle, ctx: *mut c_void, counts: u64, timeChange: f64)>;Aliased Type§
pub enum PhidgetFrequencyCounter_OnCountChangeCallback {
None,
Some(unsafe extern "C" fn(*mut _PhidgetFrequencyCounter, *mut c_void, u64, f64)),
}