Private Declare Sub abc Lib "xxx.dll" (ByVal inputInfo As String, ByVal outputInfo As String)
inputInfo = Space(256) '分配空间,长度根据源函数的约定
outputInfo = Space(256)
abc inputInfo, outputInfo
或
Private Declare Sub abc Lib "xxx.dll" (ByRef inputInfo As Byte, ByRef outputInfo As Byte)
Dim inputInfo(256) As Byte
Dim outputInfo(256) As Byte
abc inputInfo(0), outputInfo(0)