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The last time I did this, I used Visual Basic 6 - to which I no longer have access.

I just chose Project/New/Active X DLL and wrote a few lines of code (it was an extremely simple DLL).

Now I need to create another, also extremely simple, and am having problems since I don't have VB6 any more. I just don't understand all this GUID stuff, clas libraries, etc.

I don't care which language, but can someone recommend an IDE where I can simply create a new project and code a few lines (a function to open a serial port, read, close the port & return what was read) - without having to worry about GUIDs & Class Libraries & the like?

Thanks in advance

[Update] Thanks @HansPassant The DLL will be used in a legacy project.

The user goes to a web site (using MS IE only) and logs in. He is then prompted to scan an RFID tag. Some JS on the web page calls into the DLL which gets the RFID tag number from a reader on the serial port.

Now I want to attach a reader by USB, hence the need for a new (and simple DLL). But what's the simplest way to make it a COM DLL?

Mawg says reinstate Monica
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    Time has not been kind to ActiveX. You don't just need an ActiveX control, you also need a host to run it in. Which is the part that's missing in your question. Spinning one with a Winforms UserControl is still pretty straight-forward. – Hans Passant Aug 21 '13 at 11:03
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    Based on your update, this looks very relevant: http://stackoverflow.com/a/3362624/1768303 – noseratio Aug 22 '13 at 04:17

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