It is possible to use QuickOPC-COM in an application written in REAL Studio (REALbasic), www.realsoftware.com (under Windows only). We have verified this with REAL Studio 2010r5. The project that corresponds to the VB6 application "Quick Start", and simply reads and displays a value of an OPC item on a form, is ReadAndDisplayValue.rbp (24.02 KB), and the form looks like this:

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We have included this example in QuickOPC-COM Bonus Pack 5.02.1051.1 onwards. We plan to provide more examples in the future.

The actual piece of code that does the work is as simple as in most other languages:

    ' Create EasyOPC-DA component
    Dim EasyDAClient As New OleObject ("OPCLabs.EasyDAClient.5.0")

    ' Read item value and display it
    Me.TextField1.Text = EasyDAClient.ReadItemValue("", "OPCLabs.KitServer.2", "Demo.Single")

Note: With current QuickOPC-COM build, 5.02.455.1, the program crashed with In-process component, but works well with Out-of-process (Local Server) – this is something that will be addressed too.