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How to get the handle to the latest generated Polyline?


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Hello there,

another simple question for a beginner like me:

I generated a polyline with VS.








Now I want to change the visibility of the line segments with SetVertexVisibility.

But I need a handle to the previously generated polyline.

How do I get it?

Thank you for help


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  • 2 months later...

Josh, thanks for posting this, I've just used your solution to fix a problem I had creating what I thought was going to be a simple script to duplicate an object and move the duplicate by its own width plus a constant. The LNewObj command failed utterly.

Is it the command that creates the object that causes LNewObj to fail or the object type?

My code was

DUPLICATE(0,0); {the selected object}

myHandle:=LNewObj; { get its handle }

w:=HWIDTH(myHandle); { get dimension of object }

HMOVE(myHan,0,w+3.5mm); { shift dimension plus 3.5mm }

this fails to shift the duplicate whatever type of object it is.

Adding your Waldo code fixed it , though I don't understand how it works.


MacOS 10.6.8 VW 2011

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???The problem appears to be that DUPLICATE() does not update LNewObj, whereas LOCUS() does. So, using the Waldo technique will return the handle you are looking for.

???Waldo works because creating a locus will always create it in the present drawing context of the program - i.e., on a Design or Sheet Layer, or inside a Symbol, Group or other container object; and Locus() always updates LNewObj. Since new objects are always created on the top of the drawing stack, the PrevObj() to the locus (the one directly beneath it) is the Last-New-Object you were looking for. Once you get a handle to your object the locus can be (should be) thrown away. Now you know where Waldo 'was'.



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