This is not yet possible within TouchGFX, but it will hopefully change in the near future.
In the meantime, there is an option to rename the entire project by:
- make a backup copy of the files .ioc, .touchgfx, ApplicationTemplate.touchgfx.part, .cproject, .project, e.g. by adding .bak to the filename
- rename the files .ioc, .touchgfx to PRJNAME_NEW.*
- edit PRJNAME_NEW.ioc with a text editor and do a find and replace of all PRJNAME_OLD with PRJNAME_NEW
- repeat the last step with the files .touchgfx, ApplicationTemplate.touchgfx.part, .cproject, .project
Enjoy the new name even after opening the project in STM32CubeIDE!
When your question is answered, please close this topic by choosing Select as Best. This will help other users find that answer faster.
Good luck!
/Peter