The QScrollArea class provides a scrolling view onto another widget.| doc.qt.io
The QScrollBar widget provides a vertical or horizontal scroll bar.| doc.qt.io
The QAbstractScrollArea widget provides a scrolling area with on-demand scroll bars.| doc.qt.io
The QFrame class is the base class of widgets that can have a frame.| doc.qt.io
The QTextEdit class provides a widget that is used to edit and display both plain and rich text.| doc.qt.io