[]
DWRITE_FLOW_DIRECTION
public enum FlowDirection
BottomToTop = 1
DWRITE_FLOW_DIRECTION_BOTTOM_TO_TOP
LeftToRight = 2
DWRITE_FLOW_DIRECTION_LEFT_TO_RIGHT
RightToLeft = 3
DWRITE_FLOW_DIRECTION_RIGHT_TO_LEFT
TopToBottom = 0
DWRITE_FLOW_DIRECTION_TOP_TO_BOTTOM