Re: FVWM: FWD: Re: [TAG] determining screen resolution

From: Glen Lee Edwards <Glen_at_fcwm.org>
Date: Mon, 8 Oct 2001 23:30:20 -0500 (CDT)

Dan,

The line works. However, on experimenting with it after using Ctrl-Alt-KP_Plus,
the variables $[vp.width] and $[vp.height] aren't changing to be current with
the new window size. No matter what screen resolution I was at, the values
always showed 1152 and 864 respectively.

I have my screen resolution settings in /etc/X11/XF86Config reading:

        Modes "1152x864" "1024x768" "800x600"

I experimented with it by changing the line to :

        Modes "1024x768" "1152x864" "800x600"

so when I started X it would start out at 1024x768. But $[vp.width] and
$[vp.height] still read as 1152 and 864. The only way I could get them to read
the correct value was to change the "Modes" line to:

        Modes "1024x768"

When it only had one value, $[vp.width] and $[vp.height] read the current window
settings. When I have multiple values in for it the largest settings are used,
regardless of what the actual values are.

The draw back to this is that I have to modify XF86Config every time I want to
change screen resolutions. The good part is that I don't have to reset the
values in .fvwm2rc.

Is there another way to read current screen size settings through Piperead? I'm
not a computer expert. I don't know what system wide variables might hold the
current screen parameters.

Glen


Dan Espen writes:
> Glen Lee Edwards <Glen_at_fcwm.org> writes:
> > Is there a way to mathmatically modify these values from within .fvwm2rc?
> > If I
> > use $[vp.width], the bar extends app 12p beyond the viewing range of my
> > screen. I tried
> >
> > *MyBar2Geometry $[vp.width]-12x115+0-0
> > and
> > *MyBar2Geometry $[vp.width-12]x115+0-0
> >
> > but neither worked, instead moving the bar to the top of the screen (it's
> > supposed to be on the bottom).
>
> Use PipeRead to do arithmetic:
>
> PipeRead 'echo "*MyBar2Geometry `expr $[vp.width] - 12`x115+0-0"'
>
> (Warning, lightly tested.)
>
> --
> Dan Espen
> 444 Hoes Lane Room RRC 1C-214 E-mail: dane_at_mk.telcordia.com
> Piscataway, NJ 08854 Phone: (732) 699-5570
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Received on Mon Oct 08 2001 - 23:29:53 BST

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