Re: Problem with Dark Theme and Foreground

[Bruce Steers <bsteers4@xxxxxxxxx>]

That was odd.
I could only get your program to run with gb.gtk3.
It did not matter how i set the GB_GUI env it always used gb.gtk3

I then removed this line from the ".project" file...
StartupEnvironment=GB_GUI=gb.qt5 gambas3

After removing that line it now uses the different gui toolkits requested
in the IDE.
I do not know if that helps with your issue?  it certainly seemed to fix a
bug.

Respects
BruceS


On Sat, 22 Nov 2025 at 16:25, CD <dessere.claude@xxxxxx> wrote:

> Hello, thank you for your reply.
>
> I'm really disappointed!
>
> I've tried all the themes offered by Mate, but nothing works.
>
> I wrote an app that displays information for the three components:
> gb.gui  selects gb.gtk3
> gb.gui.qt  selects gb.qt6
> gb.qt5  selects gb.qt5 gambas3
>
> In design mode, the button doesn't display correctly in all three cases!
>
> The attached app includes a screenshot for each of the three cases.
>
> Only with gb.gui does the color display correctly when running.
>
> I've also attached a screenshot of Gambas3 in design mode with the test
> app.
>
> I've also included two files in the attached project that describe the
> theme I'm using.
>
> Like many others, I find that Ubuntu isn't what it used to be.
>
> What configuration do you recommend:
>
> Distribution
> Desktop
> Dark theme
> Environment settings, etc.?
>
> Thank you in advance for your expert advice.
> Regards
>
> [System]
> Gambas=3.21.1 5994807 (master)
> OperatingSystem=Linux
> Distribution=Ubuntu 24.04.3 LTS (Noble Numbat)
> Kernel=6.8.0-88-generic
> Architecture=x86_64
> Cores=8
> Memory=7817M
> Language=fr_FR.UTF-8
> Platform=x11
> Desktop=MATE
> DesktopResolution=96
> DesktopScale=9
> WidgetTheme=proxy
> Font=Ubuntu,11
> DarkTheme=True
> [Programs]
> dpkg=Programme « dpkg » de gestion de paquets Debian version 1.22.6
> (amd64).
> gcc=gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
> git=git version 2.43.0
> msgmerge=msgmerge (GNU gettext-tools) 0.21
> rpmbuild=RPM version 4.18.2
> [Libraries]
> Cairo=libcairo.so.2.11800.0
> Curl=libcurl.so.4.8.0
> DBus=libdbus-1.so.3.32.4
> GDK2=libgdk-x11-2.0.so.0.2400.33
> GDK3=libgdk-3.so.0.2409.32
> GStreamer=libgstreamer-1.0.so.0.2402.0
> GTK+2=libgtk-x11-2.0.so.0.2400.33
> GTK+3=libgtk-3.so.0.2409.32
> OpenGL=libGL.so.1.7.0
> Poppler=libpoppler.so.134.0.0
> Poppler=libpoppler.so.73.0.0
> QT5=libQt5Core.so.5.15.13
> QT6=libQt6Core.so.6.4.2
> RSvg=librsvg-2.so.2.50.0
> SDL=libSDL2-2.0.so.0.3000.0
> SQLite3=libsqlite3.so.0.8.6
> [Environment]
> COMPIZ_CONFIG_PROFILE=mate
> DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
> DEBUGINFOD_URLS=https://debuginfod.ubuntu.com
> DEFAULTS_PATH=/usr/share/gconf/mate.default.path
> DESKTOP_SESSION=mate
> DISPLAY=:0
> GB_GUI=gb.qt5
> GDMSESSION=mate
> GDM_LANG=fr_FR
> GIO_LAUNCHED_DESKTOP_FILE=<home>/Bureau/gambas3.desktop
> GIO_LAUNCHED_DESKTOP_FILE_PID=8877
> GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
> GTK3_MODULES=xapp-gtk3-module
> GTK_MODULES=appmenu-gtk-module:gail:atk-bridge:canberra-gtk-module
> GTK_OVERLAY_SCROLLING=0
> HOME=<home>
> INSIDE_CAJA_PYTHON=
> LANG=fr_FR.UTF-8
> LANGUAGE=fr_FR.UTF-8
> LC_ADDRESS=fr_FR.UTF-8
> LC_IDENTIFICATION=fr_FR.UTF-8
> LC_MEASUREMENT=fr_FR.UTF-8
> LC_MONETARY=fr_FR.UTF-8
> LC_NAME=fr_FR.UTF-8
> LC_NUMERIC=fr_FR.UTF-8
> LC_PAPER=fr_FR.UTF-8
> LC_TELEPHONE=fr_FR.UTF-8
> LC_TIME=fr_FR.UTF-8
> LOGNAME=<user>
> MANDATORY_PATH=/usr/share/gconf/mate.mandatory.path
> MATE_DESKTOP_SESSION_ID=this-is-deprecated
> PAPERSIZE=a4
>
> PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
> PWD=<home>
> QT_ACCESSIBILITY=1
> QT_FONT_DPI=96
> QT_LOGGING_RULES=*.debug=false
> QT_QPA_PLATFORMTHEME=gtk2
> QT_SCALE_FACTOR=1
>
> SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/2337,unix/<hostname>:/tmp/.ICE-unix/2337
> SHELL=/bin/bash
> SHLVL=0
> SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
> TZ=:/etc/localtime
> UBUNTU_MENUPROXY=1
> USER=<user>
> XAUTHORITY=<home>/.Xauthority
> XDG_CONFIG_DIRS=/etc/xdg/xdg-mate:/etc/xdg
> XDG_CURRENT_DESKTOP=MATE
>
> XDG_DATA_DIRS=/usr/share/mate:/usr/share/mate:/usr/share/gnome:/usr/local/share:/usr/share:/var/lib/snapd/desktop
> XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/<user>
> XDG_RUNTIME_DIR=/run/user/1000
> XDG_SEAT=seat0
> XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
> XDG_SESSION_CLASS=user
> XDG_SESSION_DESKTOP=mate
> XDG_SESSION_ID=c2
> XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
> XDG_SESSION_TYPE=x11
> XDG_VTNR=7
>
>
>
>