On 1/10/19 8:52 PM, Aere Greenway wrote:
On 1/10/19 6:46 PM, Israel wrote:
On 1/9/19 11:47 AM, Eric Bradshaw wrote:

...


Dear Aere,

The C4C Lubuntu 18.04 ReSpin now uses pkexec [https://www.freedesktop.org/software/polkit/docs/0.015/pkexec.1.html] in place of gksu. By utilizing the method put forth by and the policy files created by Allen Guarnes [https://www.allenguarnes.com/technology/resolving-the-missing-gksu-command-in-ubuntu-18-04/] you should be able to do what you want and have everything look just the same as it did. In ebery case I've tried, I've been able to replace gksu with pkexec. For example, the command gksu pcmanfm can be replaced with pkexec pcmanfm.

Eric
--
Thank you,
God bless you,
Computers4Christians
http://computers4christians.org

Hi,

I agree that pkexec is the current best practice.  You will need to make a pkexec file for the programs if they do not have one, though.

I am not sure though if systemd is replacing PolicyKit (they've replaced many many many things).  So this may be a temporary solution (should work for a few years at least).

Aere,

I did some looking around and Arch (as per usual) has a really helpful page about this

https://wiki.archlinux.org/index.php/Uniform_look_for_Qt_and_GTK_applications#QGtkStyle

tl;dr

If they are Qt4 apps

echo "[Qt]

style=GTK+" >> ~/.config/Trolltech.conf

If they are Qt5

sudo apt install qt5-style-plugins

Then you need to set this variable (so I am adding it to the xinitrc)

|echo "QT_QPA_PLATFORMTHEME=gtk2" >> .~/xinitrc|

This should get you back on track :D

--
Regards

Israel:

They are definitely qt5 applications.

I have attached a screenshot of the error dialog to this e-mail as a ".png" file.

I tried what you said to do for qt5, with results as follows:

qt5-style-plugins were already installed, and the latest version.

Your echo command didn't work.  In reading the URL info, I think it should have been:

|echo "QT_QPA_PLATFORMTHEME=gtk2" >> |||~/|.xinitrc
|

|But that didn't work either.  Signing-in didn't work either.
|

|If I could just figure out where lxqt-sudo is defining QT_STYLE_OVERRIDE, and remove it, I think I would be able to fix my systems.
|

--
Sincerely,
Aere

With the helpful information you provided, I was able to finally figure out how to fix my systems.

I edited the ".config/lxsession/lubuntu/desxtop.conf" file of my home folder.

In the "[Environment]" section, I commented-out (put a period in front of) the following lines:

qt/force_theme=gtk

qt/platform=lxqt


I then logged-out, and signed-in again.  I can now run Menu...Preferences...Qt5 Settings

But I don't have to - the problem (the strange dark color scheme, and excessively large window sizes) has gone away.

Thank you for all your help, and also thanks for the suggestions of others on this list.

--
Sincerely,
Aere

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