public static extern IntPtr imaqCaliperTool(IntPtr image, ref Point points, int numPoints, ref EdgeOptions edgeOptions, ref CaliperOptions caliperOptions, ref int numEdgePairs);
public static extern int imaqLineGaugeTool2(IntPtr image, Point start, Point end, LineGaugeMethod method, ref EdgeOptions edgeOptions, ref CoordinateTransform2 transform, ref float distance);
public static extern IntPtr imaqEdgeTool2(IntPtr image, ref Point points, int numPoints, EdgeProcess process, ref EdgeOptions options, ref int numEdges);