# Device-specific touch input. Copy to /etc/systemd/system/buttontask.service.d/override.conf
# and replace event1 with the correct event number for your touchscreen.
#
# Find the touchscreen event number:
#   grep -l -E 'ABS_X|ABS_MT_POSITION' /sys/class/input/event*/device/capabilities/abs 2>/dev/null \
#     | sed 's|.*/input/event||;s|/device.*||'
#
#   sudo mkdir -p /etc/systemd/system/buttontask.service.d
#   sudo cp .../override.conf.example /etc/systemd/system/buttontask.service.d/override.conf
#   sudo systemctl daemon-reload && sudo systemctl restart buttontask

[Service]
Environment=QT_QPA_GENERIC_PLUGINS=evdevtouch:/dev/input/event1
Environment=QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=/dev/input/event1