It comes up undefined when the code is executed from a command button using the constant MB_ICONINFORMATION, which has been defined as 64 in Foxpro.h, which has been included in efgconst.h with a #include statement.

I changed the code to call the foxpro.h file from main, and the constant comes up in a messagebox as equal to 64,


*main.prg

#include Foxpro.h

messagebox(str(MB_ICONINFORMATION))

*end main

which is correct. The code that causes the error is in a click event on an application object created by the main application.

lcMsgText = "Invalid User or Password. Try again."
---> lnDialogType = MB_ICONINFORMATION + MB_OK
=MESSAGEBOX(lcMsgText, lnDialogType, oApp.cAppName)


---> causes error variable MB_ICONINFORMATION is not found

Why is it defined at one point and then causes the error?

Paul