vba - 如何返回自定义对象数组？

Question

我正在尝试编写一个返回自定义对象数组的函数。这是我到目前为止所拥有的:

Option Explicit

Public Type Node
     mValue As Integer
     mTo() As Integer
End Type

Function FillData()
    Dim a As Node
    Dim b As Node
    Dim c As Node
    Dim nody() As Node

    a.mValue = 1
    ReDim a.mTo(0 To 1)
    a.mTo(0) = 2

    b.mValue = 2
    ReDim b.mTo(0 To 1)
    b.mTo(0) = 3

    c.mValue = 3
    ReDim c.mTo(0 To 1)
    c.mTo(0) = 1

    ReDim nody(0 To 2)
    nody(0) = a
    nody(1) = b
    nody(2) = c

    FillData = nody
End Function

Sub test()
    Dim data() As Node
    data = FillData()
End Sub

问题是，当我尝试运行它(测试子)时，我在 FillData = nody 中收到编译错误，内容如下:

only user-defined types defined in public object modules can be coerced to or from a variant or passed to late-bound functions

我的整个代码都在公共(public)模块中。如何“强制”函数返回自定义对象数组？

Answer 1

设置函数的返回值。

Option Explicit

Public Type Node
     mValue As Integer
     mTo() As Integer
End Type

Function FillData() As Node()
    Dim a As Node
    Dim b As Node
    Dim c As Node
    Dim nody() As Node

    a.mValue = 1
    ReDim a.mTo(0 To 1)
    a.mTo(0) = 2

    b.mValue = 2
    ReDim b.mTo(0 To 1)
    b.mTo(0) = 3

    c.mValue = 3
    ReDim c.mTo(0 To 1)
    c.mTo(0) = 1

    ReDim nody(0 To 2)
    nody(0) = a
    nody(1) = b
    nody(2) = c

    FillData = nody
End Function

Sub test()
    Dim data() As Node
    data = FillData()
End Sub