>To All,
>
>I am attempting to pass an array of doubles to a VBA method in AutoCAD.
>
>The documentation says the array is :
>
>"Variant (three-element array of doubles); input-only
>The 3D WCS coordinates specifying the line start point."
>
>WCS is world coordinate system, the array is a point in space.
>
>I have tried :
>
>*** this does not work
>*** try native array
>local array naPoint1(3) as Double
>local array naPoint2(3) as Double
>naPoint1[1]=62
>naPoint1[2]=420
>naPoint1[3]=0
>naPoint2[1]=432
>naPoint2[2]=430
>naPoint2[1]=0
>
>oLine = oModel.AddLine(@naPoint1,@naPoint2)
>*** or
>oLine = oModel.AddLine(naPoint1,naPoint2)
>
>I downloaded Christof Lange/Mark Wilden ' s Struct class and tried it :
>
>DEFINE CLASS point AS struct
>dimension aPoint(3)
>cMembers = "d:aPoint"
>ENDDEFINE
>
>lnBufSize = 24
>oPoint1 = createobject("point")
>oPoint1.aPoint[1] = 60
>oPoint1.aPoint[2] = 430
>oPoint1.aPoint[3] = 0
>cString1= oPoint1.GetString()
>nPtr1 = oPoint1.GetPointer(lnBufSize)
>oPoint2 = createobject("point")
>oPoint2.aPoint[1] = 630
>oPoint2.aPoint[2] = 430
>oPoint2.aPoint[3] = 0
>cString2= oPoint2.GetString()
>nPtr2 = oPoint2.GetPointer(lnBufSize)
>
>*** try every way of calling the method
>
>oLine = oModel.AddLine(cString1,cString2)
>oLine = oModel.AddLine(@cString1,@cString2)
>oLine = oModel.AddLine(nPtr1,nPtr2)
>oLine = oModel.AddLine(@nPtr1,@nPtr2) && pointer to a pointer!!
>oLine = oModel.AddLine(cString1,cString2)
>oLine = oModel.AddLine(oPoint1.aPoint,oPoint2.aPoint)
>oLine = oModel.AddLine(@oPoint1.aPoint,@oPoint2.aPoint)
>
>Nothing seems to work. All give me an Illegal parameter error.
>
>Methods which return an array of doubles does work. VFP figures out what is going on and returns a correct array of numbers.
>
>Running VFP 7.0 SP1, WIN 2000, ACAD 2002

Don,

I don't know if this will help, but since it hasn't been mentioned, it might be worth a shot. Look at the COMARRAY() function in help. It may be what you need.