Type Alias windows::Win32::System::AddressBook::LPFNBUTTON

pub type LPFNBUTTON = Option<unsafe extern "system" fn(uluiparam: usize, lpvcontext: *mut c_void, cbentryid: u32, lpselection: *mut ENTRYID, ulflags: u32) -> i32>;

Aliased Type

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

Variants

None

No value.

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

Some value of type T.