;;; returns a REAL or NIL
;;; msg = string (prompt for GETREAL)
;;; ibit = integer (for initget)
(defun get-real (msg ibit / trap)
(initget ibit)
(setq trap
(vl-catch-all-apply 'getreal (list msg))
)
(cond
((vl-catch-all-error-p trap)
(princ (vl-catch-all-error-message trap)) nil)
((not (vl-catch-all-error-p trap)) trap)
)
)
;;; example
(defun c:add2 (/ a1 a2 ans)
(if (setq a1 (get-real ":: " 1))
(if (setq a2 (get-real ":: " 1))
(setq ans (+ a1 a2))
(alert "Cancel Program?"); insert real yes/no dia. here
)
(alert "Cancel Program?"); insert real yes/no dia. here
)
(if ans (princ (strcat " " (rtos ans))))
(princ)
)
