if Application.MessageBox('确实退出吗','提示',MB_YESNO)<>IDYES then exit;
Close;

如何把消息框中的按钮显示为纯英文"YES" "NO" "CANCEL" ?

急等! 谢谢!

if MessageDlg('确定退出',mtInformation, mbYesNoCancel, 0)=IDYES then
Close;