Type Alias windows::Win32::Devices::Display::PFN_DrvEnableDirectDraw

pub type PFN_DrvEnableDirectDraw = Option<unsafe extern "system" fn(param0: DHPDEV, param1: *mut DD_CALLBACKS, param2: *mut DD_SURFACECALLBACKS, param3: *mut DD_PALETTECALLBACKS) -> BOOL>;

Aliased Type

enum PFN_DrvEnableDirectDraw {
    None,
    Some(unsafe extern "system" fn(_: DHPDEV, _: *mut DD_CALLBACKS, _: *mut DD_SURFACECALLBACKS, _: *mut DD_PALETTECALLBACKS) -> BOOL),
}

Variants

None

No value.

Some(unsafe extern "system" fn(_: DHPDEV, _: *mut DD_CALLBACKS, _: *mut DD_SURFACECALLBACKS, _: *mut DD_PALETTECALLBACKS) -> BOOL)

Some value of type T.