This article explains the basics of creating a plugin for the Contao CMS using the Contao Viewer plugin as an example. You can download the completed plugin from Contao.
Requirements Contao CMS PHP 5.3 JavaScript PreparationTo create a GroupDocs Viewer plugin for Contao CMS: Install Contao CMS. The installation of this CMS is a simple. Allow GroupDocs to appear go to Admin > Setting > Security settings > Allowed HTML tags and just add at the end....side of the CMS above the editing block of any article. When...do=themes&table=tl\_module&act=edit&id=' . $this->id; return...