最近想换取QQ聊天内容，网上查找资料说要用Accessible技术。
声明AccessibleChildren的时候提示：    错误    1    “IAccessible”在命名空间“Accessibility”中不明确。    这是怎么回事呢?
声明如下：

   Public Declare Function AccessibleChildren Lib "oleacc" ( _
         ByVal paccContainer As IAccessible, _
        ByVal iChildStart As Integer, _
        ByVal cChildren As Integer, _
         <[Out]()> ByVal rgvarChildren() As Object, _
         ByRef pcObtained As Integer) As UInt32


我用的版本是vb2008.net