void gtk_gesture_group ( GtkGesture* group_gesture, GtkGesture* gesture )
gesture to the same group than
Gestures are by default isolated in their own groups.
Both gestures must have been added to the same widget before they can be grouped.
When gestures are grouped, the state of
is kept in sync for all of those, so calling
gtk_gesture_set_sequence_state(), on one will transfer
the same value to the others.
Groups also perform an “implicit grabbing” of sequences, if a
GdkEventSequence state is set to
on one group, every other gesture group attached to the same
GtkWidget will switch the state for that sequence to
The data is owned by the caller of the function.