Date: Fri, 5 Dec 2003 13:05:33 +0000
Cc: lablgtk at kaba.or.jp
Subject: Re: The type of this expression, _[> `DELETE_EVENT ] GWindow.dialog,
Message-ID: <20031205130533.GA21247 at redhat.com>
References: <20031205110336.GA20159 at redhat.com> <16336.30123.811395.403050 at akasha.ijm.jussieu.fr>
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In-Reply-To: <16336.30123.811395.403050 at akasha.ijm.jussieu.fr>
From: Richard Jones <rich at annexia.org>

OK, a question related to the previous one.

I'm trying to do a "wizard" style dialog, like this:

	+--------------------------+
	| vbox                     |
	|                          |
	|==========================|
	|             Back  Next   |
	+--------------------------+

I reuse the same vbox for each "page" of the dialog, wiping its contents
by calling this between pages:

let clear_vbox () =
  List.iter vbox#remove vbox#children

This works fine, visually anyway.

However after about page 5 or 6, the program slows down to a
crawl. Examination of the program shows that the loop above in
clear_vbox is going round dozens of times. Yet there are or should be
only one or two widgets in the vbox on each page.

It looks as if previous widgets are somehow being "remembered" by the
vbox, although why and how is not clear (they disappear from the
screen correctly).

What's going on here? How do I once and for all remove the children of
a vbox?

Rich.

-- 
Richard Jones. http://www.annexia.org/ http://freshmeat.net/users/rwmj
Merjis Ltd. http://www.merjis.com/ - improving website return on investment
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