We use messagebox in a udf, no worries. I imagine it's the same as
showmessage.

> -----Original Message-----
> From: firebird-support@yahoogroups.com
> [mailto:firebird-support@yahoogroups.com] On Behalf Of Helen Borrie
> Sent: Friday, 23 June 2006 12:08 PM
> To: firebird-support@yahoogroups.com
> Subject: Re: [firebird-support] Re: udf won't do what it should
>
> At 10:15 AM 23/06/2006, Adam wrote:
>
> >Martin,
> >
> >This is not something Firebird will be doing. I do not have TNT
> >components installed, so it is a little tricky for me to
> look at your
> >pas. Nothing stands out too much to me (except the possibility of
> >returning nil which I have no idea how it will handle.)
> >
> >Lucky for you it is a simple procedure. Put a few
> showmessage calls in
> >and it should quickly become apparent if there is any issues
> with the
> >delphi part.
> >
> >Have you confirmed that you are using the right dll (restart the FB
> >Service for good measure). A showmessage will also allow you to be
> >confident of this.
>
> Showmessage is modal and, in a DLL, will freeze the system.
> In a UDF it will probably crash the server.
>
> ./heLen
>
>
>
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