| Value | Meaning |
|---|---|
| Normal0 | crossing because of pointer motion. |
| Grab1 | crossing because a grab is activated. |
| Ungrab2 | crossing because a grab is deactivated. |
| GtkGrab3 | crossing because a GTK grab is activated. |
| GtkUngrab4 | crossing because a GTK grab is deactivated. |
| StateChanged5 | crossing because a GTK widget changed state (e.g. sensitivity). |
| TouchBegin6 | crossing because a touch sequence has begun, this event is synthetic as the pointer might have not left the surface. |
| TouchEnd7 | crossing because a touch sequence has ended, this event is synthetic as the pointer might have not left the surface. |
| DeviceSwitch8 | crossing because of a device switch (i.e. a mouse taking control of the pointer after a touch device), this event is synthetic as the pointer didn’t leave the surface. |
Specifies the crossing mode for enter and leave events.