Understanding XDM

[uki]

2012/7/4 Polytropon <freebsd at edvax.de>:
> On Tue, 3 Jul 2012 23:27:21 -0700 (PDT), sw2wolf wrote:
>> I am using slim to login which can choose Window Manager by pressing F1 key.
>> Can XDM choose Window Manager when loginning ?
>
> No, xdm cannot do this. But as far as I remember, wdm can -- it has
> some look & feel of the original CDE display manager and it designed
> to work well with WindowMaker, but it's a very nice replacement for
> xdm if you need that specific functionality. It's quite lightweight
> (compared to gdm or kdm) and easily configurable.

xdm is very simple, it just logs you in and runs a shell script.
with default settings the shell script just executes your ~/.xinitrc

here is an example how to add shutdown button to xdm
http://neilt.org/computing/xdmshutdownbutton.php
you can use it as an example to hack your own 'change wm' feature, or
just use some xdm replacement that has that.

Cheers,
Łukasz Gruner