Lycia Theme Designer

Lycia Theme Designer is a graphical editor made for establishing the look of your 4GL-based applications, windows, forms, and widgets.

Lycia provides three kinds of themes that can be created and changed in order to make your application look and feel as you and your users need it.

System theme – systemtheme.qxtheme – specifies basic parameters of all applications developed, deployed, and run via Lycia. Note: We do not recommend editing this theme: it is rewritten to defaults at every Lycia update.

Master theme – the theme having the same name as the 4GL program – gives 4GL developers the opportunity to make the application interface both user-friendly and eye-catching and (at the same time) secure its unique appearance as compared to other applications developed for the same company.

User and Application themes allow adapting the application appearance to the company’s business logic and make different applications look as a perfect suite. Moreover, user themes can be used to change the application appearance at runtime depending on its current tasks and purposes.

Master and user themes can be created and edited via Lycia Theme Designer (recommended) and the built-in XML editor. Furthermore, user themes can be created by concatenating the pre-designed theme snippets in order to both provide consistent design of all the company's application and ease the tasks performed by corporate designers and developers.

User themes can be applied at runtime by means of apply_theme(), ui.Interface.loadStyles(), or Include.