#INCLUDE does not create memory variables. It creates constants that are replaced with the actual constant value at compile time. You need to specify the include file in every .prg or form that will use its constants.

To add an include file to a form or class go to the form or class menu and choose Include File.

>I use on begin of my start prg command #INCLUDE 'strings.h'.
>In this file I define some memory variables, that I want use
>in all my app. For example, variable APPTITLE contain
>screen caption of my app. If I use this variable in start
>prg, it work ok. But if I use it in form, VFP show error message
>'Memory variable APPTITLE not found'.
>I think, that variables definying via #INCLUDE are public.
>Or no?
>
>Maros