mxConstantsSTYLE_HORIZONTAL Field

Defines the key for the horizontal style. Possible values are true or false. This value only applies to vertices. If the STYLE_SHAPE is SHAPE_SWIMLANE a value of false indicates that the swimlane should be drawn vertically, true indicates to draw it horizontally. If the shape style does not indicate that this vertex is a swimlane, this value affects only whether the label is drawn horizontally or vertically.

public static string STYLE_HORIZONTAL