B.J. Buchalter wrote:
on 2/11/05 3:07 PM, Jeff McClintock at jeffmcc@xxxxxxxxxx wrote:
I suspect you have in mind a simple 'alternative' to COM, using the familiar VST/LADSPA technique. i.e. a C struct containing function pointers. Each function pointer leading to a 'stub' which calls the C++ wrapper layer.
In other words, COM.
Has anyone here actually implemented a COM server that returns multiple disjoint interface on the same object using C as the implementation language (as Mike is suggesting for GMPI)?
Have you dealt with the implementation complexity re: reference counting and object pointer thunking that is described in that Microsoft Cookbook document?
Is it really much easier to get right than it seems? Cause that just looks like something that could be very difficult to get right and maintain, especially as the API for each interface needs to evolve over time.
Or maybe in practice it can be structured internally just like my proposed cluster of object factory methods.
But I would feel much better hearing that someone has actually implemented what is being proposed and that it was no problem!
-- Mike Berry Adobe Systems
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