Re: gplt_x11 ignores SIGINT and SIGTSTP. Why?

[Ethan A M. <me...@uw...>]

On Saturday, 3 September 2022 16:47:18 PDT Dima Kogan wrote:
> Ethan A Merritt <me...@uw...> writes:
> 
> >> I just tried it, and it doesn't work right for me. The embed_example
> >> program builds. Running it pops up a window that disappears immediately.
> >> Then I get the shell prompt back implying that the embed_example
> >> application has exited. BUT it keeps running in the background
> >> apparently. And I do get a qt window with a plot maybe a minute later.
> >> Sometimes. Sometimes the background process just exits after a few
> >> minutes without showing me a plot.
> >
> > I cannot explain any of that.  It works normally for me here.
> > A qt window pops up immediately with four embedded gnuplot widgets
> > and a text pane.  Output from gnuplot appears in the text pane.
> > The demo replots to one of the widgets every second or so and
> > continues to do so until I close the window or hit Ctrl-C in the
> > controlling terminal.   No zombies either :-)
> 
> Must be nice :)
> 
> I just tried it again. Grabbed fresh sources from git. Rebuilt from
> scratch. Same broken behavior consistently. 

Do you have the option of logging in with a different window manager?
I normally us Plasma, which is maximally compatible with Qt, but I just
checked with an IceWM setup and it works fine there too.

	Ethan



> Some things that could be a
> problem that weren't:
> 
> - I have in my ~/.gnuplot: "set terminal x11 noenhanced". A
>   gnuplot-based Qt widget shouldn't care. It's not clear if it does or
>   doesn't, since taking that away doesn't fix it
> 
> - I'm using a tiling window manager. This constrains the window
>   geometry. So fresh windows are resized immediately after they come up.
>   This tickles bugs in some applications (like the wxt terminal, by the
>   way). It's not the problem here, though: turning off the tiling
>   behavior doesn't fix it.
> 
> - The outboard driver could be using the system gnuplot_qt instead of
>   the just-built one. Setting the GNUPLOT_DRIVER_DIR to point to the
>   local copy doesn't fix it.
> 
> I can help debug, if you're interested in looking into it. I'm doing
> other things at the moment, though, so not going to dig into this myself
> for now.
> 


-- 
Ethan A Merritt
Biomolecular Structure Center,  K-428 Health Sciences Bldg
MS 357742,   University of Washington, Seattle 98195-7742