1
我有一个VB6程序,它调用一个COM方法,传递两个数组作为参数,期待2个数组被填充为响应。将数组从VB.NET封装到COM对象中
代码是这样的,其中ItemIDs和ItemClientHandles是输入数组参数,而MyItemServerHandles和Errors由COM对象填充。
Dim ItemIDs(2) As String
Dim ItemClientHandles(2) As Long
Dim Errors() As Long ' Array for returned Item related errors
Dim MyItemServerHandles() As Long ' Server Handles for Items
ItemIDs(1) = "2,VW1000,word"
ItemIDs(2) = "2,VW1002,word"
ItemClientHandles(1) = 1
ItemClientHandles(2) = 2
Call MyItems.AddItems(2, ItemIDs, ItemClientHandles, MyItemServerHandles, Errors)
现在我想打电话从VB.NET同样的方法,并试图像这样来定义数组:
<MarshalAs(UnmanagedType.LPArray, ArraySubType:=UnmanagedType.I4, SizeConst:=2)> Private MyItemServerHandles(2) As Int32 ' Server Handles for Items
<MarshalAs(UnmanagedType.LPArray, ArraySubType:=UnmanagedType.LPWStr, SizeConst:=2)> Private ItemIDs(2) As String
<MarshalAs(UnmanagedType.LPArray, ArraySubType:=UnmanagedType.I4, SizeConst:=2)> Private ItemClientHandles(2) As Int32
<MarshalAs(UnmanagedType.LPArray, ArraySubType:=UnmanagedType.I4, SizeConst:=2)> Dim Errors(2) As Int32 ' Array for returned Item related errors
,但不能让它的工作,因为我得到一个错误(我尝试从意大利语翻译):
无法从 类型转换对象 'System.Int32 [*]' 键入 'System.Int32 []'
将数组从VB.NET托管代码编组为非托管COM代码的正确方法是什么?
谢谢