Note: Modifier keys (as defined in NavigationModifierType) [press]( GST_NAVIGATION_EVENT_KEY_PRESS) and [release](GST_NAVIGATION_KEY_PRESS) events are generated even if those states are present on all other related events
| event |
A Event to inspect. |
| key |
A pointer to a location to receive the string identifying the key press. The returned string is owned by the event, and valid only until the event is unreffed. |