change screen from Model.cpp

Emilmart · ‎2021-07-19

Hi I'd like to change screen from Model.cpp, regardless the screen I'm currently in.

Is there a solution without implementing a method that changescreen in each screens ?

Thanks !

qq3g7bad · ‎2021-07-24

I think it is not recommended way to change screen directly from Model.cpp, because classes generated by touchgfx are based on Model-View-Presenter design pattern. It will take a little more steps, but I think it is safer way using ModelListener.

Usage of ModelListener is written in the following page (in Propagating Data to UI).
- https://support.touchgfx.com/docs/development/ui-development/touchgfx-engine-features/backend-communication
It may be useful to change screen from the user code.
- https://community.st.com/s/question/0D50X0000AaYMwM/how-to-implement-switchscreen-in-touchgfx

View solution in original post

qq3g7bad · ‎2021-07-24

I think it is not recommended way to change screen directly from Model.cpp, because classes generated by touchgfx are based on Model-View-Presenter design pattern. It will take a little more steps, but I think it is safer way using ModelListener.

Usage of ModelListener is written in the following page (in Propagating Data to UI).
- https://support.touchgfx.com/docs/development/ui-development/touchgfx-engine-features/backend-communication
It may be useful to change screen from the user code.
- https://community.st.com/s/question/0D50X0000AaYMwM/how-to-implement-switchscreen-in-touchgfx