Once you have downloaded and extracted the archive, follow these steps: Open your Qt Command Prompt (e.g., "Qt 5.x for Desktop").
QWT is an extension to the Qt GUI library that provides specialized widgets for technical software. While Qt is excellent for standard UI elements, QWT fills the gap for data-heavy applications by offering: A powerful 2D plotting widget.
Since QWT is distributed as source code, you must compile it for your specific operating system and Qt version. 1. Prerequisites