Type Alias windows_sys::Win32::Graphics::Gdi::GRAYSTRINGPROC

pub type GRAYSTRINGPROC = Option<unsafe extern "system" fn(param0: HDC, param1: LPARAM, param2: i32) -> BOOL>;

Required features: "Win32_Foundation"

Aliased Type

enum GRAYSTRINGPROC {
    None,
    Some(unsafe extern "system" fn(_: isize, _: isize, _: i32) -> i32),
}

Variants

None

No value.

Some(unsafe extern "system" fn(_: isize, _: isize, _: i32) -> i32)

Some value of type T.