| Value | Meaning |
|---|---|
| NORMAL0 | crossing because of pointer motion. |
| GRAB1 | crossing because a grab is activated. |
| UNGRAB2 | crossing because a grab is deactivated. |
| GTK_GRAB3 | crossing because a GTK grab is activated. |
| GTK_UNGRAB4 | crossing because a GTK grab is deactivated. |
| STATE_CHANGED5 | crossing because a GTK widget changed state (e.g. sensitivity). |
| TOUCH_BEGIN6 | crossing because a touch sequence has begun, this event is synthetic as the pointer might have not left the surface. |
| TOUCH_END7 | crossing because a touch sequence has ended, this event is synthetic as the pointer might have not left the surface. |
| DEVICE_SWITCH8 | 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.