[Gambas-user] [Gambas Bug Tracker] Bug #1065: Icon does not appear in tray

[bugtracker at ...3416...]

http://gambaswiki.org/bugtracker/edit?object=BUG.1065&from=L21haW4-

ABDUL ZAGIROV reported a new bug.

Summary
-------

Icon does not appear in tray

Type             : Bug
Priority         : Low
Gambas version   : Unknown
Product          : GUI components


Description
-----------

Hi, everyone!

Not long ago I developed a sniffer of "rogue" dhcp servers using Gambas. Everything works like a charm except for TrayIcon component.
I tried the following steps:
     1. Selected necessary component in  Projects > Properties > Components > gb.gui.trayicon
     2. Moved a TrayIcon element to the main form
     3. Set suitable image for Picture property
     4. Set Visible property to true
     5. Started application
The application starts but there is no icon in tray.

Tried both 3.8.4 and 3.9.2 versions of Gambas. No icon!
Tried both 32 and 64 bit architectures. No icon!
Tried by creating different types of projects:
     - Graphical application
     - GTK+2 application
     - GTK+3 application
     - QT application
The same result: no icon!
Tried both XUbuntu with XFCE and LUbuntu with LXDE. No icon!
Tried on classic Ubuntu with Unity: icon appears in tray.
Tried on Kubuntu with KDE: icon appears in tray.
Also installed XUbuntu then removed XFCE and installed LXQT instead. Everything works.

As I can understand the problem appears only when either LXDE or XFCE is useed as desktop environment.

Best regards,
Abdul Zagirov!


System information
------------------

[System]
Gambas=3.9.2
OperatingSystem=Linux
Kernel=4.4.0-57-generic
Architecture=x86_64
Distribution=Ubuntu 16.04.1 LTS
Desktop=XFCE
Theme=Gtk
Language=ru_RU.UTF-8
Memory=1873M

[Libraries]
Cairo=libcairo.so.2.11400.6
Curl=libcurl.so.4.4.0
DBus=libdbus-1.so.3.14.6
GStreamer=libgstreamer-1.0.so.0.802.0
GTK+2=libgtk-x11-2.0.so.0.2400.30
GTK+3=libgtk-3.so.0.1800.9
OpenGL=libGL.so.1.2.0
Poppler=libpoppler.so.58.0.0
QT4=libQtCore.so.4.8.7
QT5=libQt5Core.so.5.5.1
SDL=libSDL-1.2.so.0.11.4
SQLite=libsqlite3.so.0.8.6

[Environment]
CLUTTER_BACKEND=x11
CLUTTER_IM_MODULE=xim
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-PieI6BpzcU
DEFAULTS_PATH=/usr/share/gconf/xubuntu.default.path
DESKTOP_SESSION=xubuntu
DISPLAY=:0.0
GB_GUI=gb.qt4
GDMSESSION=xubuntu
GDM_LANG=ru
GLADE_CATALOG_PATH=:
GLADE_MODULE_PATH=:
GLADE_PIXMAP_PATH=:
GNOME_KEYRING_CONTROL=
GNOME_KEYRING_PID=
GPG_AGENT_INFO=<home>/.gnupg/S.gpg-agent:0:1
GTK_IM_MODULE=xim
GTK_OVERLAY_SCROLLING=0
HOME=<home>
IM_CONFIG_PHASE=1
INSTANCE=
JOB=dbus
LANG=ru_RU.UTF-8
LANGUAGE=ru
LOGNAME=<user>
MANDATORY_PATH=/usr/share/gconf/xubuntu.mandatory.path
PATH=<home>/bin:<home>/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
PWD=<home>
QT4_IM_MODULE=xim
QT_ACCESSIBILITY=1
QT_IM_MODULE=
QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1
QT_STYLE_OVERRIDE=gtk
SESSION=xubuntu
SESSIONTYPE=
SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/2468,unix/<hostname>:/tmp/.ICE-unix/2468
SHELL=/bin/bash
SHLVL=0
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
TZ=:/etc/localtime
UPSTART_EVENTS=started xsession
UPSTART_INSTANCE=
UPSTART_JOB=startxfce4
UPSTART_SESSION=unix:abstract=/com/ubuntu/upstart-session/1000/2172
USER=<user>
XAUTHORITY=<home>/.Xauthority
XDG_CONFIG_DIRS=/etc/xdg/xdg-xubuntu:/usr/share/upstart/xdg:/etc/xdg:/etc/xdg
XDG_CURRENT_DESKTOP=XFCE
XDG_DATA_DIRS=/usr/share/xubuntu:/usr/share/xfce4:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop:/usr/share
XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/<user>
XDG_MENU_PREFIX=xfce-
XDG_RUNTIME_DIR=/run/user/1000
XDG_SEAT=seat0
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
XDG_SESSION_DESKTOP=xubuntu
XDG_SESSION_ID=c2
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
XDG_SESSION_TYPE=x11
XDG_VTNR=7
XMODIFIERS=@...3498...=none