DVT PSS IDE User Guide
Rev. 21.1.50, 23 November 2021
Right click in the current editor > Copy Full Path.
You can also assign it a shortcut: go to Window > Preferences > General > Keys (or press twice ctrl + shift + L ) and assign a shortcut to Copy Full Path. It's a global shortcut, you can call it from anywhere but only the active editor's input will be considered (or the current selection in the project explorer if you call it when the project explorer view is active e.g. after you select a file).