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要在ecilisp中创建一个计算器窗口，你可以使用GUI库，比如Tkinter。以下是一个简单的示例代码，展示了如何创建一个简单的计算器窗口：
(use-package "tk") (tk-init) (defparameter *calculator-window* (tk-toplevel)) (tk-title *calculator-window* "Calculator") (defparameter *display* (tk-label *calculator-window* :text "0" :font '("Helvetica" 24))) (tk-grid *display* :row 0 :column 0 :columnspan 4) (defun update-display (text) (tk-config *display* :text text)) (defun on-button-click (button) (let ((text (tk-cget button :text))) (if (string= text "C") (update-display "0") (update-display (format nil "~a~a" (tk-cget *display* :text) text)))) (defun create-button (text row column) (let ((button (tk-button *calculator-window* :text text :command #'(lambda () (on-button-click button))))) (tk-grid button :row row :column column))) (loop for i from 1 to 9 do (create-button (format nil "~a" i) (floor (/ (- i 1) 3) 3) (mod (- i 1) 3))) (create-button "0" 3 0) (create-button "+" 1 3) (create-button "-" 2 3) (create-button "*" 3 3) (create-button "/" 4 3) (create-button "=" 4 0) (create-button "C" 4 1) (tk-event-loop) 运行这个代码后，将会创建一个简单的计算器窗口，你可以点击按钮来进行基本的数学运算。你也可以根据自己的需求来定制窗口的样式和功能。
