The Win32 family of modules will not work under Linux, it's Windows-only. Some Linux Desktop Environments (e.g. KDE, Gnome) support file-pasting, but only with calls to their libraries (e.g. Qt and GTK, respectively).

As for the Windows API, you want Microsoft's documentation on that matter. Anything in the API can be called using Win32::API, and the module docs explain the mechanics.