in the first , i wanted to replace current xfce4-panel in zorin lite with the same xfce4-panel version(but edited code), i wanted to
Integrate orage calendar with Xfce panel one click instead of double click , so i edited it source code, and it worked good.
Integrate orage calendar with Xfce panel clock
previous i wanted to upgrade to xfce4 panel 4.17, but glib version of zorin doesn't support that
now i will try upgrading xfce4 panel 4.16.5