Type Alias windows_sys::Win32::Devices::Display::PFN_EngSubtractRgn

pub type PFN_EngSubtractRgn = Option<unsafe extern "system" fn(hrgnresult: HANDLE, hrgna: HANDLE, hrgnb: HANDLE) -> i32>;

Required features: "Win32_Foundation"

Aliased Type

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

Variants

None

No value.

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

Some value of type T.