VBA中使用Win API打开文件对话框

使用网上比较普遍的vb中使用WindowsAPI实现打开文件对话框代码，

Declare Function GetOpenFileName Lib "comdlg32.dll" Alias _
        "GetOpenFileNameA" (pOpenfilename As OPENFILENAME) As Long
 
Type OPENFILENAME
     lStructSize As Long
     hwndOwner As Long
     hInstance As Long
     lpstrFilter As String
     lpstrCustomFilter As String
     nMaxCustFilter As Long
     nFilterIndex As Long
     lpstrFile As String
     nMaxFile As Long
     lpstrFileTitle As String
     nMaxFileTitle As Long
     lpstrInitialDir As String
     lpstrTitle As String
     flags As Long
     nFileOffset As Integer
     nFileExtension As Integer
     lpstrDefExt As String
     lCustData As Long
     lpfnHook As Long
     lpTemplateName As String
End Type 

在ArcGIS的Macros中定义Sub, t()

调用代码

Sub t()
    Dim ofn As OPENFILENAME
    Dim rtn As String

    ofn.lStructSize = Len(ofn)
    ofn.hwndOwner = Application.hWnd
    'ofn.hInstance = Application.hInstance
    ofn.lpstrFilter = "XML Files (*.xml)" & Chr(0) & "*.xml" & Chr(0)
    ofn.lpstrFile = Space(254)
    ofn.nMaxFile = 255
    ofn.lpstrFileTitle = Space(254)
    ofn.nMaxFileTitle = 255
    ofn.lpstrInitialDir = "C:/"
    ofn.lpstrTitle = "打开文件"
    ofn.flags = 6148

    rtn = GetOpenFileName(ofn)

    If rtn >= 1 Then
        MsgBox ofn.lpstrFile
    Else
        MsgBox "Cancel Was Pressed"
    End If

End Sub

实现xml坐标文件，用ArcObject绘制Feature前提