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From: kyle@xanth.UUCP (Kyle Jones)
Newsgroups: comp.emacs
Subject: Re: How many windows?
Message-ID: <3281@xanth.UUCP>
Date: Tue, 10-Nov-87 01:17:08 EST
Article-I.D.: xanth.3281
Posted: Tue Nov 10 01:17:08 1987
Date-Received: Thu, 12-Nov-87 06:45:16 EST
References: <231@usl-pc.UUCP>
Lines: 26
Summary: use (one-window-p)

In article <231@usl-pc.UUCP>, jpdres10@usl-pc.UUCP (Green Eric Lee) writes:
> Is there any way to find out how many windows are on the screen in a
> Elisp program (GNU Emacs version 18.??).

Yes, you could iterate through all the windows with
   (select-window (next-window))
and count them, but that's too much work for what you're trying
to do...

> I have a program that I want to automatically split the screen
> into two windows, ONLY two windows, that is, if we already have two
> windows on the screen, we DON'T want to split into THREE windows.

Use (one-window-p):

one-window-p:
Returns non-nil if there is only one window.
Optional arg NOMINI non-nil means don't count the minibuffer
even if it is active.

So if (one-window-p) returns non-nil, split the window, otherwise don't.

You also might want to look at the documentation for the `pop-up-windows' and
`split-height-threshold' variables.

kyle jones  <kyle@odu.edu>  old dominion university, norfolk, va  usa