Type Alias windows_sys::Win32::System::DataExchange::PFNCALLBACK

pub type PFNCALLBACK = Option<unsafe extern "system" fn(wtype: u32, wfmt: u32, hconv: HCONV, hsz1: HSZ, hsz2: HSZ, hdata: HDDEDATA, dwdata1: usize, dwdata2: usize) -> HDDEDATA>;

Aliased Type

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

Variants

None

No value.

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

Some value of type T.