The COM is distributed under VC++, it supply interface for IM usage. Now I want to add a UI for this IM, which would be desiged by Qt. My Qt is qt-sdk-win-opensource-2010.02.1. in windows XP system.

The COM is not installed in my system, so the total COM files are:
../Bin/ *.dll, Microsoft.VC90.CRT.manifest
../IDL/ *.idl (only two files)
../TLB/ *.tlb (only two files)
../Include/ *.c *.h (two files respective)

The question is how to make use of that COM interface in my Qt project?