Re: Problem with Dark Theme and Foreground

[CD <dessere.claude@xxxxxx>]

I don't know which bug you're referring to, 
nor how that line ended up in the project file. 

 I've tested it with and without that line, 
and I get exactly the same behavior 
except that `Application.Env["GB_GUI"]` 
returns nothing with gb.qt5. 

 I've made a summary, which I've attached. 

 One thing has changed with the gb.qt5 component: 
In my first email about this, the color wasn't displaying in design mode; 
now it is. 
 But in runtime mode, there's still no foreground color for the button!

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=blackmate
Font=Ubuntu Mono,13
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.gtk3
GDMSESSION=mate
GDM_LANG=fr_FR
GIO_LAUNCHED_DESKTOP_FILE=<home>/Bureau/gambas3.desktop
GIO_LAUNCHED_DESKTOP_FILE_PID=56895
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:/us
r/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

Le samedi 22 novembre 2025 à 17:00 +0000, Bruce Steers a écrit :
> 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/sh
> > are:/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
> > 
> > 
> > 

GB_GUI=gb.gtk3
StartupEnvironment=GB_GUI=gb.qt5 gambas3

button.foreground							design			running

Component		Application.Env["GB_GUI"]
gb.qt5 		-> 		gb.qt5 gambas3			orange			white		background=dark
gb.gui.qt 	-> 		gb.qt6					orange			orange		but background=white
gb.gui		-> 		gb.gtk3					orange			orange		background=dark		


GB_GUI=gb.gtk3
Removed line StartupEnvironment=GB_GUI=gb.qt5 gambas3

button.foreground							design			running

Component		Application.Env["GB_GUI"]
gb.qt5 		-> 								orange			white		background=dark
gb.gui.qt 	-> 		gb.qt6					orange			orange		but background=white
gb.gui		-> 		gb.gtk3					orange			orange		background=dark