VB6から.NET に移行したら今まで使えてたDLLが使えなくなって
もー８時間くらい試行錯誤してます…　どなたかヒントだけでもプリーズ！

〜〜　VB6版（正常に動く
Private Type TestInfo
dataType As Long
dataSize As Long
scale As Double
act As Long
mot As Long
frm As Long
End Type

Private Declare Function GetInfo Lib "getinfo.dll" Alias "_GetInfo@8" (ByVal lpInFileName As String, lpInfo As TestInfo) As Integer

Dim iReturn As Integer
Dim info As TestInfo

iReturn = GetInfo(strFileName, info)