Public Delegate Sub SheetTabDoubleClickEventHandler( _
   ByVal sender As Object, _
   ByVal e As SheetTabDoubleClickEventArgs _
) 

Dim instance As New SheetTabDoubleClickEventHandler(AddressOf HandlerMethod)

public delegate void SheetTabDoubleClickEventHandler( 
   object sender,
   SheetTabDoubleClickEventArgs e
)

fpSpread1.SheetTabDoubleClick += new FarPoint.Win.Spread.SheetTabDoubleClickEventHandler(fpSpread1SheetTabDoubleClick);

private void fpSpread1SheetTabDoubleClick(object sender, FarPoint.Win.Spread.SheetTabDoubleClickEventArgs e)
{

}

Dim eh As FarPoint.Win.Spread.SheetTabDoubleClickEventHandler = AddressOf FpSpread1SheetTabDoubleClick
AddHandler FpSpread1.SheetTabDoubleClick, eh

Private Sub FpSpread1SheetTabDoubleClick(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.SheetTabDoubleClickEventArgs)
Handles FpSpread1.SheetTabDoubleClick

End Sub