AutoCad函数的参数的奇怪问题

bluefires

Sub Example_SetXRecordData()

    ' This example creates a new XRecord if one doesn't exist,

    ' appends data to the XRecord, and reads it back.  To see data being added,

    ' run the example more than once.

    Dim TrackingDictionary As AcadDictionary, TrackingXRecord As AcadXRecord

    Dim XRecordDataType As Variant, XRecordData As Variant

    Dim ArraySize As Long, iCount As Long

    Dim DataType As Integer, Data As String, msg As String

    ' Unique identifiers to distinguish our XRecordData from other XRecordData

    Const TYPE_STRING = 1

    Const TAG_DICTIONARY_NAME = "ObjectTrackerDictionary"

    Const TAG_XRECORD_NAME = "ObjectTrackerXRecord"

    ' Connect to the dictionary in which the XRecord is stored

    On Error GoTo CREATE

    Set TrackingDictionary = ThisDrawing.Dictionaries(TAG_DICTIONARY_NAME)

    Set TrackingXRecord = TrackingDictionary.GetObject(TAG_XRECORD_NAME)

    On Error GoTo 0

    ' Get current XRecordData

    TrackingXRecord.GetXRecordData XRecordDataType, XRecordData

    ' If there is no array already, create one

    If VarType(XRecordDataType) And vbArray = vbArray Then

        ArraySize = UBound(XRecordDataType) + 1       ' Get the size of the data elements returned

        ArraySize = ArraySize + 1                        ' Increase to hold new data

        ReDim Preserve XRecordDataType(0 To ArraySize)

        ReDim Preserve XRecordData(0 To ArraySize)

    Else

        ArraySize = 0

        ReDim XRecordDataType(0 To ArraySize) As Integer

        ReDim XRecordData(0 To ArraySize) As Variant

    End If

    ' Append new XRecord Data

    '

    ' For this sample, we only append the current item to the XRecord

    XRecordDataType(ArraySize) = TYPE_STRING: XRecordData(ArraySize) = CStr(Now)

    TrackingXRecord.SetXRecordData XRecordDataType, XRecordData

    ' Read back all XRecordData entries

    TrackingXRecord.GetXRecordData XRecordDataType, XRecordData

    ArraySize = UBound(XRecordDataType)

    ' Retrieve and display stored XRecordData

    For iCount = 0 To ArraySize

        ' Get information for this element

        DataType = XRecordDataType(iCount)

        Data = XRecordData(iCount)

        If DataType = TYPE_STRING Then

            msg = msg & Data & vbCrLf

        End If

    Next

    MsgBox "The data in the XRecord is: " & vbCrLf & vbCrLf & msg, vbInformation

    Exit Sub

CREATE:

    ' Create the objects that hold the XRecordData

    If TrackingDictionary Is Nothing Then  ' Make sure the tracking object is there

        Set TrackingDictionary = ThisDrawing.Dictionaries.Add(TAG_DICTIONARY_NAME)

        Set TrackingXRecord = TrackingDictionary.AddXRecord(TAG_XRECORD_NAME)

    End If

    Resume

End Sub

这个程序是书上的例子，我把它改了一下

    ' Get current XRecordData

    TrackingXRecord.GetXRecordData XRecordDataType, XRecordData

    ' If there is no array already, create one

    If VarType(XRecordDataType) And vbArray = vbArray Then

        在这个下面开始改动，放一个函数

        Dim return_date() as Variant

        Dim array1() as Variant

         return_date=search_date(XRecordData,array1)

          …………………………

………………………….

下面是程序的其他部分，知道程序结束。

先说一下search_date(XRecordData,array1)这个函数，

完整定义Public function search_date(xrecorddata() as Variant ,array1() as Variant)

这个函数的功能是返回xrecorddata()中和array1()中相同的数据，将数据作为一个数组返回

我出问题的地方就是编译通不过，它说return_date=search_date(XRecordData,array1)调用中XRecordData数据类型不对。

可是按照我的想法是If VarType(XRecordDataType) And vbArray = vbArray Then这个语句不是已经判别XRecordDataType 和

XRecordData都为数组了吗？我的程序大概想法是对一张图纸，首先判断他的字典是否有信息（即由数组XRecordData表示的），

如果有数据则和array1()中的数据进行比较，要是没有则把array1()中的数据赋值给XRecordData（），然后用SetXRecordData把

值放入字典。我现在没有源代码在家里，在公司了，大家帮我分析一下。