Pass a handle from VB.NET to a dll in c#

Hello everybody, I´m trying to use a dll to save in a xml document, an inkcollector used in a tablet pc application made in VB.NET. A make the call to the dll passing a handle of the InkPicture control. The problem I have is that I don´t know how to make reference to the handle in the function of the dll. VB.NET: Dim guardarXML As New SaveXML WriteXMLdoc.SaveData(Me.InkPicture1.Handle) ---- dll: namespace Guardar.SaveXML { public void SaveDatos( ? ) { ... Any idea how to do it ??? Thanks in advance and sorry for my english.