title: keep UIButton current state when it is disabled
body: <p>Hi i am making a custom <strong>UIButton</strong> which have images for <strong>UIControlStateNormal</strong> and <strong>UIControlStateSelected</strong>. But when i set <code>[myBtn setEnabled:No];</code> it changes back to <strong>UIControlStateNormal</strong> state instead of disabling at selected state. How can i keep the current state of button and disable it?</p>