Help me about the code for GUIDE of Matlab ?

I create a GUI with buttons, edit text, Static text,... When I finish write the code for buttons, It's odd some functions that I don't use. Could I delete them, Will it error ? thanks (look at my picture)

Answer 1

[Amit]

You can delete the _Callback functions if you are not using it and that will not give any errors. However you should not delete the _CreateFcn functions.