pub type LPDIENUMDEVICESCALLBACKW = Option<unsafe extern "system" fn(param0: *mut DIDEVICEINSTANCEW, param1: *mut c_void) -> BOOL>;

Aliased Type§

enum LPDIENUMDEVICESCALLBACKW {
    None,
    Some(unsafe extern "system" fn(_: *mut DIDEVICEINSTANCEW, _: *mut c_void) -> BOOL),
}

Variants§

§1.0.0

None

No value.

§1.0.0

Some(unsafe extern "system" fn(_: *mut DIDEVICEINSTANCEW, _: *mut c_void) -> BOOL)

Some value of type T.