小编Sil*_*nus的帖子

我使用asdf-install将ltk安装到Steel Bank Common Lisp,但我甚至无法开始使用它V_V.下面的代码是文档中最简单的示例,几乎是逐字复制的.

(asdf:operate 'asdf:load-op :ltk)

(defun hello-1()
  (with-ltk ()
   (let ((b (make-instance 'button
                           :master nil
                           :text "Press Me"
                           :command (lambda ()
                                      (format t "Hello World!~&")))))
     (pack b))))
(hello-1)

这是我从sbcl得到的错误消息:

> ; in: LAMBDA NIL
;     (PACK B)
; 
; caught STYLE-WARNING:
;   undefined function: PACK

;     (WITH-LTK NIL
;      (LET ((B (MAKE-INSTANCE 'BUTTON :MASTER NIL :TEXT "Press Me" :COMMAND #)))
;        (PACK B)))
; 
; caught STYLE-WARNING:
;   undefined function: WITH-LTK
; 
; compilation unit finished
;   Undefined …