pub type SENDASYNCPROC = Option<unsafe extern "system" fn(param0: HWND, param1: u32, param2: usize, param3: LRESULT)>;
Expand description

Required features: "Win32_Foundation"

Aliased Type§

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

Variants§

§1.0.0

None

No value.

§1.0.0

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

Some value of type T.