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Qt - Notes

Overview

Created by the Qt Company in 1995, Qt is a framework for creating graphical user interface (GUI) applications. - It's also a cross-plateform running on Linux, MacOS, Windows and embedded devices. - It's compatible with C++, python and JS

Qt Applications

  • Automobile
  • Mobile & Othe devices with a User Interface(UI)
  • ...

Tools & Frameworks

Qt development framework

Qt QML - Language and infrastracture

  • The component code is generated automatically in a file.qml from UI

  • QML modules/modular components

  • Create .qml components and place them into a specific dir:
import moduledir\subdir

Qt Quick designer

Interface infrastructures to design GUIs for MOBILE and EMBEDDED applications

  • UI Design : design and prototype the UI experience whithout any code
  • main UI (ui.qml and qml)

  • critical safety elements (Qt safe render)

  • Quick safe renders and standards

  • "telltales" => safety critical part
  • Quick language : Qt Safe Renders and safety standards
  • Telltales : safety critical part, these are the warning lamps for things such as airbag, oil level, engine temperature and brakes

Qt Designer

Interface infrastructures to design GUIs for desktop applications

  • Tools : Qt Widgets Application.

Devices

  • Desktop
  • Mobile
  • Embedded
  • NXP widely used is :
    • i.MX6 CPU
    • i.MX6 GPU

Cross-platform

Qt Project (.pro) file is actually the project file used by "qmake" to build your application, library, or plugin.

Qt applications workflow

  1. Design Studio
  2. Implementation
  3. Create reuseble componenents
  4. Animation
  5. Interactions (States/connection)
  6. App setup (RT, embedded, Desktop ...)
  7. RT
  8. Embedded
  9. Desktop
  10. Mobile

Hello World!

UI Quick: - Components(sender, receiver...) - Signal - Animation

References

Documentation - Qt wiki - Qt Documentation - Qt for Beginners - C++ - Qt for Python

Books - Qt resources