windows::Win32::Devices::Display

Type Alias PFN_EngUnionRgn

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

Aliased Type§

pub enum PFN_EngUnionRgn {
    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.