Hi Martin

I have already tried but it does not work

my alfa.h is

#DEFINE compila .T.

In main program I have insert

_include= 'c:\alfa.h'

in a form button.click

#IFDEF compila  
   WAIT WINDOW "MYDEFINE exists"
#ELSE
   WAIT WINDOW "MYDEFINE does not exist"
#ENDIF

But the method return "MYDEFINE does not exist"

where it it wrong?

Luigi