windows::Win32::Devices::Display

Type Alias PFN_EngSubtractRgn

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

Aliased Type§

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

Variants§

§1.0.0

None

No value.

§1.0.0

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

Some value of type T.