[求助]：关于getAcDbObjectId

zonly

Acad::ErrorStatus
getAcDbObjectId(
AcDbObjectId& retId,
bool createIfNotFound,
const AcDbHandle& objHandle,
Adesk::UInt32 xRefId = 0);

该函数的功能是已知实体句柄求实体ID，但我试验了下发觉它始终只返回eUnknownHandle，不知道哪位用过，介绍一下方法，谢谢！

抱歉，发错了，这个应该是ObjectArx的问题
不过将错就错，我想了解一下，VBA里类似功能的函数是什么，Lisp里似乎有个handenthandle函数功能和此类似。

tsuihan

借花献佛，这个例子是AutoCAD 自带的VBA帮助里的相关代码。

函数是：HandleToObject


''''''Start to show the code

<pre>

Sub Example_HandleToObject()
    ' This example creates a spline in model space, and returns the
    ' handle for the spline. Then the spline is returned from the handle and colored.
   
    ' Create the spline
    Dim splineObj As AcadSpline
    Dim startTan(0 To 2) As Double
    Dim endTan(0 To 2) As Double
    Dim fitPoints(0 To 8) As Double
   
    startTan(0) = 0.5: startTan(1) = 0.5: startTan(2) = 0
    endTan(0) = 0.5: endTan(1) = 0.5: endTan(2) = 0
    fitPoints(0) = 1: fitPoints(1) = 1: fitPoints(2) = 0
    fitPoints(3) = 5: fitPoints(4) = 5: fitPoints(5) = 0
    fitPoints(6) = 10: fitPoints(7) = 0: fitPoints(8) = 0
    Set splineObj = ThisDrawing.ModelSpace.AddSpline(fitPoints, startTan, endTan)
   
    ZoomExtents
   
   
    ' Find the handle of the spline
    Dim handle As String
    handle = splineObj.handle
    MsgBox "The handle of the Spline is: " & splineObj.handle, , "HandleToObject Example"
        
    ' Find an object from a given handle
    Dim tempObj As AcadObject
    Set tempObj = ThisDrawing.HandleToObject(handle)[/COLOR]

    ' Now use the newly initialized object variable to color the object
    Dim color As AcadAcCmColor
    Set color = AcadApplication.GetInterfaceObject("AutoCAD.AcCmColor.16")
    Call color.SetRGB(80, 100, 244)
   
    tempObj.TrueColor = color
   
    ThisDrawing.Regen True
    MsgBox "The Spline is now blue.", , "ObjectIDToObject Example"
   
End Sub