open source GUI library based on C/C++ for Embedded MCU

[rstofer]

rstofer

What you are describing sounds a lot like XWindowing or X11 protocol.

https://en.wikipedia.org/wiki/X_Window_System

Yes, X is a great example of an abstracted window manager.  Linux uses it for the graphic desktop but it's the kind of thing that you know is there but you don't often mess with it.  Unless you want dual displays and such.

It really gets down to how much capability the OPs project needs.  For a control panel it shouldn't be much.  I can't imagine stacked windows but I suppose it could happen.

One downside:  It's going to take a gigantic embedded processor to run X.  At that point I might as well run the entire Linux package and build my app with Qt4.

[Jeroen3]

Reliability of Raspberry PI would be poor in many HMI environments. But that is only something limited by cost.

In the netherlands we have a graphical thermostat/house controller ("toon") you can get from your energy company. It has a 7" display, and used an 400 MHz Freescale MCIMX27MOP4a equivalent. (not sure if it is still that one) It runs linux iirc.

[kisvegabor]

Hi,

Check LittlevGL!
LittlevGL is a free and open-source graphics library to create GUIs on embedded systems with easy-to-use graphical elements, beautiful visual effects and low memory footprint.

Website: https://littlevgl.com/
GitHub: https://github.com/littlevgl/lvgl