lPointCount
The number of points in the array that you specify in the vXArray and vYArray parameters.
Call this method once, passing 2 arrays of point coordinates, which must be in the order in which the vertices are connected. To define the line that closes a polygon, the last point in the array is connected to the first point of the array.
Alternatively, use the AnnDefine method to specify the array of points interactively.
AnnSetPoints works only with the following types of objects:
ANNOBJECT_POINTER
ANNOBJECT_FREEHAND
ANNOBJECT_LINE
ANNOBJECT_POLYGON
ANNOBJECT_POLYLINE
ANNOBJECT_POINT
ANNOBJECT_PROTRACTOR
ANNOBJECT_FREEHANDHOTSPOT