These don't seem to match the PSDK headers or MSDN (which don't match each other either...) Which are the correct ones?
Oof. Your guess is as good as mine. I looked at MSDN and at MinGW's headers for inspiration, but MSDN says multiple incompatible versions of af_irda.h were released. I'll omit the definitions for IAS_QUERY and IAS_SET for now, I don't actually use them. --Juan