Re: messages from the WWW Library

Tim Berners-Lee <>
Date: Tue, 6 Jul 93 11:14:50 +0200
From: Tim Berners-Lee <>
Message-id: <>
To: Aleksandar Totic <>
Subject: Re: messages from the WWW Library
Status: RO
>From: Aleksandar Totic <>
>Date: Mon, 5 Jul 93 19:00:33 CDT
>In-Reply-To: <>; from "Lou  
Montulli" at Jul 5, 93 5:43 pm
>X-Mailer: ELM [version 2.3 PL11]

>> What do you developers think about changing all of the informative
>> user messages that currently come out of the WWW library into some
>> sort of standard user_message call.

>I think that this is a great idea, especially in GUI environment  
>printf does not really work. The error messages are scattered
>all throughout the code, which makes them hard to modify for a
>particular platform. What I would also like to do is give user the
>opportunity to correct an error.

Agreed.  The module of user interface messages is already there in  
fact, ready to be overridden in the GUI case. It is HTAlert and
is described in
There is now a link to this (to and) from the internals page.

Routines are

	HTAlert,		(warning)
	HTPrompt,		(user input)
	HTProgress,		(informational)
	HTConfirm		(message, OK/Cancel response)

>This would give programs that use the library flexibility we need so
>that we do not hack the insides of its code.

Precicely.  The problem is, not all the libwww code uses these
routines at the moment.