# UI components of LMMS

LMMS has several UI components.

### Windows

* Main window(`MainWindow`) : The root window with the menu bar, toolbar, sidebar, etc. It has an [MDI](https://en.wikipedia.org/wiki/Multiple_document_interface)(Multiple Document Interface) area for subwindows.
* Subwindows(`SubWindow`): MDI child windows inheriting `QMdiSubWindow`. It has custom styling and wraps several views like th song editor, instrument windows, etc.
* TODO

### Toolbar/sidebar widgets

* TODO

### Common widgets

* TODO

### Track widgets

* TODO