Type Alias windows_sys::Win32::UI::Controls::PFNDPAMERGECONST

pub type PFNDPAMERGECONST = Option<unsafe extern "system" fn(umsg: DPAMM_MESSAGE, pvdest: *const c_void, pvsrc: *const c_void, lparam: LPARAM) -> *mut c_void>;

Aliased Type

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

Variants

None

No value.

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

Some value of type T.