gdkKeyboardUngrab.
This overrides any previous keyboard grab by this client.gdkKeyboardGrab(window, owner.events = FALSE, time = "GDK_CURRENT_TIME")owner.eventsFALSE then all keyboard events are reported with respect to
window. If TRUE then keyboard events for this application are reported as
normal, but keyboard events outside this application are reported wittimeGdkEvent, or GDK_CURRENT_TIME if no timestamp is
available.GdkGrabStatus] GDK_GRAB_SUCCESS if the grab was successful.GdkEventGrabBroken events that
are emitted when the grab ends unvoluntarily.