Hello, I am the original author of GetClassProcAddress.
I recently developed a small IDE plugin, and accidentally came across this thread while searching for data. I noticed you are discussing how to retrieve function addresses in class modules – I once spent quite a bit of time figuring this out myself. If you'd like me to offer any advice, please feel free to let me know.
Funny enough, since I developed this technology around 15 or 16 years ago, some details are a bit fuzzy now. However, when I write small programs for my own use, I still use iSucClass.cls (implemented with GetClassProcAddress) for subclassing. So I still remember the core technical principles, and I have my original blog post that can help jog my memory.
I'm really glad to register on this forum for the first time, and also found such a comprehensive WinAPI declaration library!