The scope of the header file is a PRG/class/form it's included in. You've to include header file in every PRG/class/form that uses it. In Class/Form you do that through menu Class/Form -> Include File ...

>When I include a header file in a .prg the classes/forms I instantiate/call from this .prg don't know the defined variables in this header file.
>
>ie I've got a simple prg like this:
>#INCLUDE "myheader.h"
>public oApp
>oApp = createobject('customClass')
>
>
>In the init event of oApp i've this code
>? cMyConstant
>
>cMyConstant is, of course, defined in myheader.h
>
>I get an error Variable cMyconstant is not found or something like that.
>
>I've studied tastrade but that didn't help.
>
>What am i missing here???
>
>tia, victor