"My old Office 2003 copy still works perfectly. Poor Micros**t, nobody wants to buy their new toys" it would help if they would add new useful features to msaccess.
change line from:
Function SayHello(text As string ptr) As integer EXPORT
Function SayHello(byval text As ZString ptr) As integer EXPORT
as per mrswiss instructions , now works without giving a warning message during compile.
i'm am ready, i begin with this usb to rs485 converter:https://www.ebay.com/itm/CH340-USB-to-R ... 2749.l2649
i will connect it to a EPever MPPT Solar Charge Controller, uses modbus protocol.
i feel i can do this because you guys taught me, then you armed me with pointers :) what ever happens it will be all your fault.