What you are showing on your screenshot seems fine.
What UI application are you trying to run ? One available on TouchGFX Designer ?
Have you generated the application template for F429 Disco available on TouchGFX Designer ? If not you can start by trying to run first this application template with a UI and if this works, you should check if the code from your current project is different from the one generated by TouchGFX Designer, especially when it comes to components initialization.