Коды нажатых кнопок в модальных диалогах
mrNone = 0
mrOk = 1
mrCancel = 2
mrAbort = 3
mrRetry = 4
mrIgnore = 5
mrYes = 6
mrNo = 7
mrAll = 8
mrNoToAll = 9
mrYesToAll = 10
mrClose = 11
Ссылки:
MessageDlg
,
TForm.ShowModal