Re: [dev] [dwm] Obtain focused monitor

[Tom Schwindl]

Hi,

On Sun Jan 8, 2023 at 11:40 AM CET, A Farzat wrote:
> On 23/01/08 11:32am, Hiltjo Posthuma wrote:
> > On Sun, Jan 08, 2023 at 07:19:10PM +0900, A Farzat wrote:
> > > Is there a way to obtain the currently focused monitor in dwm? I want to
> > > use it in my script to control which monitor gets its brightness
> > > modified.
> > > 
> > > Regards,
> > > Farzat
> > 
> > selmon
> > 
> > -- 
> > Kind regards,
> > Hiltjo
> > 
>
> And how do I access that command? If possible I want to access it from
> a shell script.
>
> I am open to modifying the dwm source code if necessary.
>
> Regards,
> Farzat

selmon isn't a command. It's a variable in the source code located at
dwm.c:269 (upstream). You could write a function like the following to dump
its value to stdout/stderr. Now you have to figure out where to call it.

--
Best Regards,
Tom Schwindl


diff --git a/dwm.c b/dwm.c
index 03baf42b3502..4fa8253c91e0 100644
--- a/dwm.c
+++ b/dwm.c
@@ -234,6 +234,7 @@ static int xerror(Display *dpy, XErrorEvent *ee);
 static int xerrordummy(Display *dpy, XErrorEvent *ee);
 static int xerrorstart(Display *dpy, XErrorEvent *ee);
 static void zoom(const Arg *arg);
+static void dumpmon(void);
 
 /* variables */
 static const char broken[] = "broken";
@@ -276,6 +277,13 @@ static Window root, wmcheckwin;
 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
 
 /* function implementations */
+static void
+dumpmon(void)
+{
+   if (selmon)
+   fprintf(stdout, "%d\n", selmon->num);
+}
+
 void
 applyrules(Client *c)
 {

Re: [dev] [dwm] Obtain focused monitor

[Hiltjo Posthuma]

On Sun, Jan 08, 2023 at 07:40:21PM +0900, A Farzat wrote:
> On 23/01/08 11:32am, Hiltjo Posthuma wrote:
> > On Sun, Jan 08, 2023 at 07:19:10PM +0900, A Farzat wrote:
> > > Is there a way to obtain the currently focused monitor in dwm? I want to
> > > use it in my script to control which monitor gets its brightness
> > > modified.
> > > 
> > > Regards,
> > > Farzat
> > 
> > selmon
> > 
> > -- 
> > Kind regards,
> > Hiltjo
> > 
> 
> And how do I access that command? If possible I want to access it from
> a shell script.
> 
> I am open to modifying the dwm source code if necessary.
> 
> Regards,
> Farzat

Hi,

For example using the dmenumon variable, it is set in spawn():
http://git.suckless.org/dwm/commit/ba56fe9fea0a28d8184a727a987836a0903e2682.html

Hope this helps,

-- 
Kind regards,
Hiltjo

Re: [dev] [dwm] Obtain focused monitor

[A Farzat]

On 23/01/08 11:32am, Hiltjo Posthuma wrote:
> On Sun, Jan 08, 2023 at 07:19:10PM +0900, A Farzat wrote:
> > Is there a way to obtain the currently focused monitor in dwm? I want to
> > use it in my script to control which monitor gets its brightness
> > modified.
> > 
> > Regards,
> > Farzat
> 
> selmon
> 
> -- 
> Kind regards,
> Hiltjo
> 

And how do I access that command? If possible I want to access it from
a shell script.

I am open to modifying the dwm source code if necessary.

Regards,
Farzat


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Re: [dev] [dwm] Obtain focused monitor

[Hiltjo Posthuma]

On Sun, Jan 08, 2023 at 07:19:10PM +0900, A Farzat wrote:
> Is there a way to obtain the currently focused monitor in dwm? I want to
> use it in my script to control which monitor gets its brightness
> modified.
> 
> Regards,
> Farzat

selmon

-- 
Kind regards,
Hiltjo

[dev] [dwm] Obtain focused monitor

[A Farzat]

Is there a way to obtain the currently focused monitor in dwm? I want to
use it in my script to control which monitor gets its brightness
modified.

Regards,
Farzat


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[dev] st: no need for scrollback patch or program by using -o option

[Greg Reagle]

I wrote this little wrapper script I call ost:

<<<
#!/bin/sh
export ST_LOG_FILE=$(mktemp) || { printf '%s\n' "$0: cannot create temp file" 
>&2 ; exit 1; }
st -o "$ST_LOG_FILE" "$@"
rm "$ST_LOG_FILE"
>>>

If some output scrolls past that I want to go back and see, I look at its 
"$ST_LOG_FILE" in another terminal.  This seems to obviate my need for a 
scrollback patch or program.