Generally, Delphi has a built-in the GUID generator (Ctrl+Shift+G
shortcut), but it is not available from the menu.
After installation of some IDE wizards/experts (eg. JEDI VCS), this shortcut is sometimes automatically overwritten by another function, and to use the built-in GUID generator, it is necessary to reconfigure the keyboard shortcuts of the IDE.
You can also add console or GUI version of the GUID Generator to the IDE tools:
GUID Generator (Copies GUID to the clipboard)
.--count=1 --format=Delphi --copy
--noload --nosave --reset -c 1 -f Delphi -cp --left=-1000 --close
Now, when you will need the GUID (interface identifier), select from the Ctrl+V
in the source editor.