{"id":4354,"date":"2019-08-19T14:06:24","date_gmt":"2019-08-19T19:06:24","guid":{"rendered":"https:\/\/blogs.mathworks.com\/videos\/?p=4354"},"modified":"2019-08-20T18:26:04","modified_gmt":"2019-08-20T23:26:04","slug":"saving-state-in-a-windowbuttonmotionfcn-callback","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/videos\/2019\/08\/19\/saving-state-in-a-windowbuttonmotionfcn-callback\/","title":{"rendered":"Saving State in a WindowButtonMotionFcn Callback"},"content":{"rendered":"<p>I need to display some text information when I hover over the nodes in my graph plot. I&#8217;m going to use a text object, updated via the <tt>WindowButtonMotionFcn<\/tt> property of the figure, but I need to be able to remember its state so I can turn it on and off. I&#8217;m going to try and use a nested function to store the text object in the parent workspace of the callback.<\/p>\n<p>Features covered in this <a href=\"https:\/\/blogs.mathworks.com\/videos\/2015\/10\/29\/matlab-code-along-videos\/\">code-along<\/a> style video include:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.mathworks.com\/help\/matlab\/ref\/matlab.ui.figureappd-properties.html\"><tt>WindowButtonMotionFcn<\/tt><\/a> property of a figure<\/li>\n<li><a href=\"https:\/\/www.mathworks.com\/help\/matlab\/ref\/text.html\"><tt>text<\/tt> <\/a>object<\/li>\n<li>Nested Functions<\/li>\n<\/ul>\n<p><div class=\"row\"><div class=\"col-xs-12 containing-block\"><div class=\"bc-outer-container add_margin_20\"><videoplayer><div class=\"video-js-container\"><video data-video-id=\"6074487627001\" data-video-category=\"blog\" data-autostart=\"false\" data-account=\"62009828001\" data-omniture-account=\"mathwgbl\" data-player=\"rJ9XCz2Sx\" data-embed=\"default\" id=\"mathworks-brightcove-player\" class=\"video-js\" controls><\/video><script src=\"\/\/players.brightcove.net\/62009828001\/rJ9XCz2Sx_default\/index.min.js\"><\/script><script>if (typeof(playerLoaded) === 'undefined') {var playerLoaded = false;}(function isVideojsDefined() {if (typeof(videojs) !== 'undefined') {videojs(\"mathworks-brightcove-player\").on('loadedmetadata', function() {playerLoaded = true;});} else {setTimeout(isVideojsDefined, 10);}})();<\/script><\/div><\/videoplayer><\/div><\/div><\/div><\/p>\n<p>Play the video in full screen mode for a better viewing experience.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"thumbnail thumbnail_asset asset_overlay video\"><a href=\"https:\/\/blogs.mathworks.com\/videos\/2019\/08\/19\/saving-state-in-a-windowbuttonmotionfcn-callback\/?dir=autoplay\"><img decoding=\"async\" src=\"https:\/\/cf-images.us-east-1.prod.boltdns.net\/v1\/static\/62009828001\/4913203a-577d-4f20-85ed-24c689d1be2d\/f1151a1a-8160-4f88-9e86-184d6ea6a479\/1280x720\/match\/image.jpg\" onError=\"this.style.display ='none';\"\/><\/p>\n<div class=\"overlay_container\">\n      <span class=\"icon-video icon_color_null\"><time class=\"video_length\">20:55<\/time><\/span>\n      <\/div>\n<p>      <\/a><\/div>\n<p>I need to display some text information when I hover over the nodes in my graph plot. I&#8217;m going to use a text object, updated via the WindowButtonMotionFcn property of the figure, but I need to&#8230; <a class=\"read-more\" href=\"https:\/\/blogs.mathworks.com\/videos\/2019\/08\/19\/saving-state-in-a-windowbuttonmotionfcn-callback\/\">read more >><\/a><\/p>\n","protected":false},"author":133,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[27,4],"tags":[],"_links":{"self":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/4354"}],"collection":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/users\/133"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/comments?post=4354"}],"version-history":[{"count":9,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/4354\/revisions"}],"predecessor-version":[{"id":4372,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/4354\/revisions\/4372"}],"wp:attachment":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/media?parent=4354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/categories?post=4354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/tags?post=4354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}