GestureLongPressDragStartCallback typedef

void GestureLongPressDragStartCallback (GestureLongPressDragStartDetails details)

Signature from a LongPressDragGestureRecognizer when a pointer has remained in contact with the screen at the same location for a long period of time.

Implementation

typedef GestureLongPressDragStartCallback = void Function(GestureLongPressDragStartDetails details);