>Well, I wasn't specific. This is about DLL and a user interface. This window should not be generated in a first place. Just like when you print from Word there is no ridiculous window saying 'Printing..'.

DECLARE INTEGER GetDesktopWindow IN WIN32API
DECLARE INTEGER LockWindowUpdate IN WIN32API INTEGER lnHandle
hWin = GetDeskTopWindow()
LockWindowUpdate(hWin)
*COMPILE 123.prg
REPORT FORM x TO PRINT
LockWindowUpdate(0)

You can use this "hide" the output window, but you still can't use this in a .DLL as it's still "there" as UI and won't work in a .DLL.

But you can use this if you're not in a .DLL. Works for that annoying COMPILE message, too.