It is possible to use VB6 or even OCX components for Kithara RealTime Suite?
In principle, it is possible to use VB6 to use our software. But since VB6 is very old now, there are only a few sample programs. The main goal of our software is to offer libraries for implementing "real-time under Windows". This can only be done on the kernel-level of Windows. So, languages that can run on the kernel-level are needed. Those languages are currently only C/C++ and Delphi. For many examples, we also support C# projects, because it is possible to program the main application in C# and put only the time-critical parts into a DLL written in C++.
If you would use VB.NET, then it would be easy for you to use the C# interface. But still it would be necessary to program a DLL written in C or C++ for time-critical code. If it is not time-critical (real-time), then you could stay on the application level and write everything in C# or VB.NET.
Even if it would be possible to program in VB6, we do not recommend this, because VB6 is not capable to execute multi-threaded applications properly. The same occurs for OCX, so it should be clear why we do not made any attempt to develop OCX components.