Hi Terry,

The parameters in function/method call are passed by value (default controlled by SET UDFPARMS). The @ denotes that parameter is passed by reference.

>I have not used the @ delimeter yet - now I will try. Is that (the @) a space saver? The help screen does not list that guy - but I have seen it in some code samples, yet, not in others/
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>I did try casting everything as an integer in the mousemove. I am wondering if that is something I should do - even in cotrol methods. Thoughts?
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>Also, are the nX and nY a pixel or Twip reference? I have converted the mousemove nX and nY to twips as I do for hittest in the tree and list OCX.
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>I will run my test bed again - initially, when the TwipsToChartPart fires - it is not on the VtChPartTypePoint - that would explain why the code after the initial mouse move onto the chart fails during interpolation - but not as yet on a Chart Part - returns an .F.
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>But again, Thanks - I don't feel so isolated - you should open a chat line for near burnouts to share their issues!:-)
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>We'll talk to anything - even a programmed bot!
>