Type Alias windows_sys::Win32::Devices::Tapi::PHONEEVENT

pub type PHONEEVENT = Option<unsafe extern "system" fn(htphone: HTAPIPHONE, dwmsg: u32, dwparam1: usize, dwparam2: usize, dwparam3: usize)>;

Aliased Type

enum PHONEEVENT {
    None,
    Some(unsafe extern "system" fn(_: isize, _: u32, _: usize, _: usize, _: usize)),
}

Variants

None

No value.

Some(unsafe extern "system" fn(_: isize, _: u32, _: usize, _: usize, _: usize))

Some value of type T.