Imports System.Runtime.InteropServices Public Class Form1 Declare Function usb_tc08_open_unit Lib "usbtc08.dll" () As Short Declare Function usb_tc08_get_unit_info Lib "usbtc08.dll" (ByVal handle As Short, ByRef info As tUSBTC08Info) As Short Declare Function usb_tc08_get_single Lib "usbtc08.dll" (...

Dear Martyn -

The following code give me a "...may be inaccessible due to protection level" error on line 54 ... can you tell me how to fix it? Please send an email.

Thanks!

EVH