DllStructCreate

[Ejoc]

Is there a destructor being called to free a DllStruct if the variable returned from DllStructCreate is set to equal another DllStructCreate? I'm trying to create a link listed, which should be possible using DllStructCreate, but something is not working as I'm expecting it too:

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$sNode          = "int;int;int;ptr" 
$node       = DllStructCreate($sNode)
If @Error Then
    MsgBox(0,"","node = DllStructCreate(sNode)")
EndIf
$node_ptr   = DllStructGetPtr($node)
DllStructSetData($node,1,1)
DllStructSetData($node,4,0)
$NodeHead_ptr   = $node_ptr
$NodeHead   = DllStructCreate($sNode,$NodeHead_ptr)
If @Error Then
    MsgBox(0,"","NodeHead = DllStructCreate(sNode,NodeHead_ptr)")
EndIf
MsgBox(0,"",    "node(" & $node_ptr & ") = " & DllStructGetData($node,1) & " " & DllStructGetData($node,4) & @CRLF & _
        "NodeHead(" & $NodeHead_ptr & ") = " & DllStructGetData($NodeHead,1) & " " & DllStructGetData($NodeHead,4))


$node       = DllStructCreate($sNode)
If @Error Then
    MsgBox(0,"","node = DllStructCreate(sNode)")
EndIf
$node_ptr   = DllStructGetPtr($node)
DllStructSetData($node,1,2)
DllStructSetData($node,4,0)
$NodeHead   = DllStructCreate($sNode,$NodeHead_ptr)
If @Error Then
    MsgBox(0,"","NodeHead = DllStructCreate(sNode,NodeHead_ptr)")
EndIf
DllStructSetData($NodeHead,4,$node_ptr)
MsgBox(0,"",    "node(" & $node_ptr & ") = " & DllStructGetData($node,1) & " " & DllStructGetData($node,4) & @CRLF & _
        "NodeHead(" & $NodeHead_ptr & ") = " & DllStructGetData($NodeHead,1) & " " & DllStructGetData($NodeHead,4))


$node       = DllStructCreate($sNode)
If @Error Then
    MsgBox(0,"","node = DllStructCreate(sNode)")
EndIf
$node_ptr   = DllStructGetPtr($node)
DllStructSetData($node,1,3)
DllStructSetData($node,4,0)
$NodeHead   = DllStructCreate($sNode,$NodeHead_ptr)
If @Error Then
    MsgBox(0,"","NodeHead = DllStructCreate(sNode,NodeHead_ptr)")
EndIf

MsgBox(0,"",    "node(" & $node_ptr & ") = " & DllStructGetData($node,1) & " " & DllStructGetData($node,4) & @CRLF & _
        "NodeHead(" & $NodeHead_ptr & ") = " & DllStructGetData($NodeHead,1) & " " & DllStructGetData($NodeHead,4))

Results:

node(6099336) = 1 0

NodeHead(6099336) = 1 0

-As Expected

node(6101672) = 2 0

NodeHead(6099336) = 1 6101672

-As Expected

node(6101112) = 3 0

NodeHead(6099336) = 153 5832864

-Not Expected