| Value | Meaning |
|---|---|
| Default1 | Means nothing, and should not be used. |
| Copy2 | Copy the data. |
| Move4 | Move the data, i.e. first copy it, then delete it from the source using the DELETE target of the X selection protocol. |
| Link8 | Add a link to the data. Note that this is only useful if source and destination agree on what it means. |
| Private16 | Special action which tells the source that the destination will do something that the source doesn’t understand. |
| Ask32 | Ask the user what to do with the data. |
Used in #GdkDragContext to indicate what the destination should do with the dropped data.