Type Alias windows_sys::Win32::Devices::Tapi::TUISPIDLLCALLBACK

pub type TUISPIDLLCALLBACK = Option<unsafe extern "system" fn(dwobjectid: usize, dwobjecttype: u32, lpparams: *mut c_void, dwsize: u32) -> i32>;

Aliased Type

enum TUISPIDLLCALLBACK {
    None,
    Some(unsafe extern "system" fn(_: usize, _: u32, _: *mut c_void, _: u32) -> i32),
}

Variants

None

No value.

Some(unsafe extern "system" fn(_: usize, _: u32, _: *mut c_void, _: u32) -> i32)

Some value of type T.