windows_sys::Win32::UI::WindowsAndMessaging

Type Alias MSGBOXCALLBACK

pub type MSGBOXCALLBACK = Option<unsafe extern "system" fn(lphelpinfo: *mut HELPINFO)>;

Aliased Type§

enum MSGBOXCALLBACK {
    None,
    Some(unsafe extern "system" fn(_: *mut HELPINFO)),
}

Variants§

§1.0.0

None

No value.

§1.0.0

Some(unsafe extern "system" fn(_: *mut HELPINFO))

Some value of type T.