Dropping Files

I was wondering if there was anyway to get the file address of a file before it was actually dropped, e.g. when the cursor is holding the file over the form but has no let go of it yet. Thanks in advance. The code below is what I have so far and it works fine for normal dropping.

Code:

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Public Function PreFilterMessage(ByRef m As System.Windows.Forms.Message) As Boolean Implements IMessageFilter.PreFilterMessage
        If m.Msg = WM_DROPFILES Then
            Dim nfiles As Integer = DragQueryFile(m.WParam, -1, Nothing, 0) '<- this code to handle multiple dropped files.. not really neccesary for this example
            Dim i As Integer
            For i = 0 To nfiles
                Dim sb As StringBuilder = New StringBuilder(256)
                DragQueryFile(m.WParam, i, sb, 256)
                HandleDroppedFiles(sb.ToString())
            Next
            DragFinish(m.WParam)
            Return True
        End If
        Return False
    End Function

    Public Sub HandleDroppedFiles(ByVal file As String)
        If Len(file) > 0 Then
            MsgBox("File has been dropped")
        End If
    End Sub

    Private Declare Function DragAcceptFiles Lib "shell32.dll" (ByVal hwnd As IntPtr, ByVal accept As Boolean) As Long

    Private Declare Function DragQueryFile Lib "shell32.dll" (ByVal hdrop As IntPtr, ByVal ifile As Integer, ByVal fname As StringBuilder, ByVal fnsize As Integer) As Integer

    Private Declare Sub DragFinish Lib "Shell32.dll" (ByVal hdrop As IntPtr)

    Public Const WM_DROPFILES As Integer = 563

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