Type Alias UiaEventCallback

pub type UiaEventCallback = Option<unsafe extern "system" fn(pargs: *mut UiaEventArgs, prequesteddata: *mut SAFEARRAY, ptreestructure: Ref<'_, BSTR>)>;

Aliased Type

enum UiaEventCallback {
    None,
    Some(unsafe extern "system" fn(_: *mut UiaEventArgs, _: *mut SAFEARRAY, _: Ref<'_, BSTR>)),
}

Variants

None

No value.

Some(unsafe extern "system" fn(_: *mut UiaEventArgs, _: *mut SAFEARRAY, _: Ref<'_, BSTR>))

Some value of type T.