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Excel-DNAからの多元配列の戻り値の取得について

Last updated at Posted at 2016-03-30

Excel-DNA側で関数を

public static object[,] DNA関数名(引数) { .. }

のように戻り値をobjectの多元配列とした場合のVBA側での受け方。

VBAでの記述

    Dim val As Variant
    val = Application.Run("DNA関数名", 引数)

のようにVariant型で受け、次元数を見て処理を分岐させる。

    d = Dimension(val)
    '0: 引数なし
    '1: n x 1配列 val(i)
    '2: n x m配列 val(i, 1), val(j, 2)
    '添え字の最少最大はLBound, UBoundで取得

Variant型の次元数は

' Variant配列の次元数を取得
Function Dimension(val As Variant) As Integer
    Dim TempData As Variant
    Dim i As Long

    On Error Resume Next
    Do While Err.Number = 0
        i = i + 1
        TempData = UBound(val, i)
    Loop
    On Error GoTo 0

    Dimension = i - 1
End Function

で取得できる。

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