用VB做AutoCAD二次开发，程序运行时出现实时错误424，要求对象！但是这个不涉及对控件问题呀，请问怎么回事

Question

Dim objCylinder As Acad3DSolid
Dim ptCen(0 To 2) As Double
ptCen(0) = 0: ptCen(1) = 0: ptCen(2) = 0
Set objCylinder = Acaddoc.ModelSpace.AddCylinder(ptCen, 40, 300)
报错的是这一行“Set objCylinder = Acaddoc.ModelSpace.AddCylinder(ptCen, 40, 300)”

Answer 1

可能是 Acaddoc 没定义吧
Public Acaddoc As AcadApplication
Public ThisDrawing As AcadDocument追问

定义了也不行。感觉问题是出在ptCen，因为运行时鼠标指这(ptCen,40,300)时ptCen没有赋值。还是这句报错，现在是“实时错误91”，对象变量或with块变量未设置。

追答

Public Acaddoc As AcadApplication
Public ThisDrawing As AcadDocument

Private Sub Command1_Click()
Me.Hide
Dim objCylinder As Acad3DSolid
Dim ptCen(0 To 2) As Double
ptCen(0) = 0: ptCen(1) = 0: ptCen(2) = 0
Set objCylinder = ThisDrawing.ModelSpace.AddCylinder(ptCen, 40, 300)
End Sub

Private Sub Form_Load()
RunAutoCAD
End Sub

Public Sub RunAutoCAD() '连接AutoCAD
On Error Resume Next
Set Acaddoc = GetObject(, "AutoCAD.Application")
If Err Then
Err.Clear
Set Acaddoc = GetObject(, "AutoCAD.Application")
If Err Then
MsgBox Err.Description
Exit Sub
End If
End If

Set Acaddoc = GetObject(, "AutoCAD.Application")
Set ThisDrawing = Acaddoc .ActiveDocument
End Sub

追问

嗯，这段解决了。给您添麻烦了，您能再看一下以下代码吗，因为现在下一个地方又报错了。
objRegion = Thisdrawing.ModelSpace.AddRegion(objlist)这句实时错误-2145386493输入无效"