QML Based User Interfaces Last update: 22.06.2026 Qt Modeling Language (QML) is a user interface markup language that is declarative, similar to CSS and JSON. Using QML to create custom user interfaces allows you to: Create custom interfaces with the exact same look and feel as the optiSLang application interface Embed the custom interface into the optiSLang application interface Use inline Java scripting for data mining and interaction Related documentation: QML: https://doc.qt.io/qt-5/qtqml-index.html QtQuick: https://doc.qt.io/qt-5/qtquick-index.html QtQuick Controls 1 and 2: https://doc.qt.io/qt-5/qtquickcontrols-index.html, https://doc.qt.io/qt-5/qtquickcontrols-overview.html
