{"id":6905,"date":"2024-03-14T04:48:57","date_gmt":"2024-03-14T04:48:57","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-create-a-calculator-window-in-ecilisp\/"},"modified":"2025-08-02T09:39:30","modified_gmt":"2025-08-02T09:39:30","slug":"how-to-create-a-calculator-window-in-ecilisp","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-create-a-calculator-window-in-ecilisp\/","title":{"rendered":"Ecilisp Calculator Tutorial: Create with Tkinter"},"content":{"rendered":"<p>To create a calculator window in ecilisp, you can use a GUI library such as Tkinter. Here is a simple example code showing how to create a basic calculator window.<\/p>\n<pre class=\"post-pre\"><code>(<span class=\"hljs-name\">use-package<\/span> <span class=\"hljs-string\">\"tk\"<\/span>)\r\n(<span class=\"hljs-name\">tk-init<\/span>)\r\n\r\n(<span class=\"hljs-name\">defparameter<\/span> *calculator-window* (<span class=\"hljs-name\">tk-toplevel<\/span>))\r\n(<span class=\"hljs-name\">tk-title<\/span> *calculator-window* <span class=\"hljs-string\">\"Calculator\"<\/span>)\r\n\r\n(<span class=\"hljs-name\">defparameter<\/span> *display* (<span class=\"hljs-name\">tk-label<\/span> *calculator-window* <span class=\"hljs-symbol\">:text<\/span> <span class=\"hljs-string\">\"0\"<\/span> <span class=\"hljs-symbol\">:font<\/span> '(<span class=\"hljs-string\">\"Helvetica\"<\/span> <span class=\"hljs-number\">24<\/span>)))\r\n(<span class=\"hljs-name\">tk-grid<\/span> *display* <span class=\"hljs-symbol\">:row<\/span> <span class=\"hljs-number\">0<\/span> <span class=\"hljs-symbol\">:column<\/span> <span class=\"hljs-number\">0<\/span> <span class=\"hljs-symbol\">:columnspan<\/span> <span class=\"hljs-number\">4<\/span>)\r\n\r\n(<span class=\"hljs-name\">defun<\/span> update-display (<span class=\"hljs-name\">text<\/span>)\r\n  (<span class=\"hljs-name\">tk-config<\/span> *display* <span class=\"hljs-symbol\">:text<\/span> text))\r\n\r\n(<span class=\"hljs-name\">defun<\/span> on-button-click (<span class=\"hljs-name\">button<\/span>)\r\n  (<span class=\"hljs-name\">let<\/span> ((<span class=\"hljs-name\">text<\/span> (<span class=\"hljs-name\">tk-cget<\/span> button <span class=\"hljs-symbol\">:text<\/span>)))\r\n    (<span class=\"hljs-name\">if<\/span> (<span class=\"hljs-name\">string=<\/span> text <span class=\"hljs-string\">\"C\"<\/span>)\r\n        (<span class=\"hljs-name\">update-display<\/span> <span class=\"hljs-string\">\"0\"<\/span>)\r\n        (<span class=\"hljs-name\">update-display<\/span> (<span class=\"hljs-name\">format<\/span> <span class=\"hljs-literal\">nil<\/span> <span class=\"hljs-string\">\"~a~a\"<\/span> (<span class=\"hljs-name\">tk-cget<\/span> *display* <span class=\"hljs-symbol\">:text<\/span>) text))))\r\n\r\n(<span class=\"hljs-name\">defun<\/span> create-button (<span class=\"hljs-name\">text<\/span> row column)\r\n  (<span class=\"hljs-name\">let<\/span> ((<span class=\"hljs-name\">button<\/span> (<span class=\"hljs-name\">tk-button<\/span> *calculator-window* <span class=\"hljs-symbol\">:text<\/span> text <span class=\"hljs-symbol\">:command<\/span> #'(lambda () (on-button-click button)))))\r\n    (<span class=\"hljs-name\">tk-grid<\/span> button <span class=\"hljs-symbol\">:row<\/span> row <span class=\"hljs-symbol\">:column<\/span> column)))\r\n\r\n(<span class=\"hljs-name\">loop<\/span> for i from <span class=\"hljs-number\">1<\/span> to <span class=\"hljs-number\">9<\/span> do\r\n     (<span class=\"hljs-name\">create-button<\/span> (<span class=\"hljs-name\">format<\/span> <span class=\"hljs-literal\">nil<\/span> <span class=\"hljs-string\">\"~a\"<\/span> i) (<span class=\"hljs-name\">floor<\/span> (<span class=\"hljs-name\">\/<\/span> (<span class=\"hljs-name\">-<\/span> i <span class=\"hljs-number\">1<\/span>) <span class=\"hljs-number\">3<\/span>) <span class=\"hljs-number\">3<\/span>) (<span class=\"hljs-name\">mod<\/span> (<span class=\"hljs-name\">-<\/span> i <span class=\"hljs-number\">1<\/span>) <span class=\"hljs-number\">3<\/span>)))\r\n\r\n(<span class=\"hljs-name\">create-button<\/span> <span class=\"hljs-string\">\"0\"<\/span> <span class=\"hljs-number\">3<\/span> <span class=\"hljs-number\">0<\/span>)\r\n(<span class=\"hljs-name\">create-button<\/span> <span class=\"hljs-string\">\"+\"<\/span> <span class=\"hljs-number\">1<\/span> <span class=\"hljs-number\">3<\/span>)\r\n(<span class=\"hljs-name\">create-button<\/span> <span class=\"hljs-string\">\"-\"<\/span> <span class=\"hljs-number\">2<\/span> <span class=\"hljs-number\">3<\/span>)\r\n(<span class=\"hljs-name\">create-button<\/span> <span class=\"hljs-string\">\"*\"<\/span> <span class=\"hljs-number\">3<\/span> <span class=\"hljs-number\">3<\/span>)\r\n(<span class=\"hljs-name\">create-button<\/span> <span class=\"hljs-string\">\"\/\"<\/span> <span class=\"hljs-number\">4<\/span> <span class=\"hljs-number\">3<\/span>)\r\n(<span class=\"hljs-name\">create-button<\/span> <span class=\"hljs-string\">\"=\"<\/span> <span class=\"hljs-number\">4<\/span> <span class=\"hljs-number\">0<\/span>)\r\n(<span class=\"hljs-name\">create-button<\/span> <span class=\"hljs-string\">\"C\"<\/span> <span class=\"hljs-number\">4<\/span> <span class=\"hljs-number\">1<\/span>)\r\n\r\n(<span class=\"hljs-name\">tk-event-loop<\/span>)\r\n<\/code><\/pre>\n<p>Running this code will create a simple calculator window where you can click buttons to perform basic math operations. You can also customize the style and function of the window according to your needs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To create a calculator window in ecilisp, you can use a GUI library such as Tkinter. Here is a simple example code showing how to create a basic calculator window. (use-package &#8220;tk&#8221;) (tk-init) (defparameter *calculator-window* (tk-toplevel)) (tk-title *calculator-window* &#8220;Calculator&#8221;) (defparameter *display* (tk-label *calculator-window* :text &#8220;0&#8221; :font &#8216;(&#8220;Helvetica&#8221; 24))) (tk-grid *display* :row 0 :column 0 :columnspan [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[8673,8613,8675,8674,6600],"class_list":["post-6905","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-calculator-gui","tag-ecilisp","tag-gui-tutorial","tag-lisp-programming","tag-tkinter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ecilisp Calculator Tutorial: Create with Tkinter - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to build a functional calculator GUI in Ecilisp using Tkinter. 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