| Value | Meaning |
|---|---|
| None0 | no protocol. |
| Motif1 | The Motif DND protocol. No longer supported |
| Xdnd2 | The Xdnd protocol. |
| Rootwin3 | An extension to the Xdnd protocol for unclaimed root window drops. |
| Win32Dropfiles4 | The simple WM_DROPFILES protocol. |
| Ole25 | The complex OLE2 DND protocol (not implemented). |
| Local6 | Intra-application DND. |
| Wayland7 | Wayland DND protocol. |
Used in #GdkDragContext to indicate the protocol according to which DND is done.