I was recently porting some LZX code in OpenLaszlo Training materials from 4.0.12 to 4.1, and stumbled upon a few issues, which I thought I’d post here as a reference.<\/p>\n
Don’t use <method event=””> Syntax<\/strong><\/p>\n The <handler name=””>syntax was introduced to replace the <method event=””> syntax some time ago. With 4.1, I found that the compiler\/debugger could get confused if you continued to use the old syntax in some cases. Sometimes the error messages were not useful. In short, replace: … with: Delegate Method Arguments<\/strong><\/p>\n Any method you call with a delegate must now have a defined argument. This is in preparation for future compatibility with SWF9. Check these out colabioclipanama2019<\/a>. In short, if you write: … you should define your method as shown below:<\/p>\n The New “lz” Namespace<\/strong><\/p>\n In OpenLaszlo 4.0.x, there was a global<\/strong> object that contained references to classes, colors and global tokens. In OpenLaszlo 4.1, there is now an lz<\/strong> object that replaces this for class definitions. Here\u2019s\u00a0salbreux-pesage<\/a><\/span> an example for you to better understanding.It creates a virtual namespace. So if you need to procedurally instantiate an OpenLaszlo window, instead of writing:<\/p>\n … you now write:<\/p>\n If you need to paramaterize the name of a class, you used to write:<\/p>\n … instead, now you would write:<\/p>\n Those are the main issues I ran into. Otherwise code written for OpenLaszlo 4.0.12 seems to run fine on 4.1.<\/p>\n","protected":false},"excerpt":{"rendered":" I was recently porting some LZX code in OpenLaszlo Training materials from 4.0.12 to 4.1, and stumbled upon a few issues, which I thought I’d post here as a reference. Don’t use <method event=””> Syntax The <handler name=””>syntax was introduced to replace the <method event=””> syntax some time ago. With 4.1, I found that the … Continue reading Migrating LZX Code to OpenLaszlo 4.1<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2,3],"tags":[],"_links":{"self":[{"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/posts\/80"}],"collection":[{"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/comments?post=80"}],"version-history":[{"count":3,"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/posts\/80\/revisions"}],"predecessor-version":[{"id":402,"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/posts\/80\/revisions\/402"}],"wp:attachment":[{"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/media?parent=80"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/categories?post=80"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.antunkarlovac.com\/blog\/wp-json\/wp\/v2\/tags?post=80"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n
\n<method event=\"onevent\">
\n...
\n<\/method><\/code><\/p>\n
\n
\n<handler name=\"onevent\">
\n...
\n<\/handler><\/code><\/p>\n
\n
\n<script>
\nnew LzDelegate(canvas, \"myMethod\", ds, \"ondata\");
\n<\/script><\/code><\/p>\n<method name=\"myMethod\">
\n...
\n<\/method><\/code><\/p>\n<method name=\"myMethod\" args=\"arg\">
\n...
\n<\/method><\/code><\/p>\nnew window(canvas, {width:300, height:300});<\/code><\/p>\nnew lz.window(canvas, {width:300, height:300});<\/code><\/p>\nvar classname = \"window\";
\nnew global[classname](canvas, {width:300, height:300});<\/code><\/p>\nvar classname = \"window\";
\nnew lz[classname](canvas, {width:300, height:300})<\/code>;<\/p>\n