First at all i don't know if class is the correct word, so my apologies.
I have this *.desktop file to open
#!/usr/bin/env xdg-open [Desktop Entry] Version=1.0 Type=Application Terminal=false Icon=/home/gabo/Pictures/icon.svg Exec=mate-terminal -x gnuplot Name=GNUplot
Which works perfectly. But, since the app is started from a terminal, the window class (and the icon) is the same for my
gnuplot shortcut and for any terminal.
In the screenshot you can see that i have opened both *.desktop file and a terminal emulator, and the windows buttons are grouped.
How i can differentiate between them (in the windows buttons)?