>Just out of curiosity, :-) my understanding is that VFP, VB, etc. are written in VC++. If that be so, what is VC++ written in, the previous VC++, or another C++ compiler? And for a given version of VFP/VB, say Visual Studio 6, what version of VC++ are they written in, VC++5? And how do "features" in VC++ propagate down to VFP/VB? Not that any of this actually matters ... but I am curious. :-)
>
>Thanks,
>Bill

I once worked for a company producing a Pascal compiler, and the procedure was this:

1) Write the sourcecode for your new pascal compiler in ---- Pascal.
2) Compile your code using someone elses' Pascal compiler. This gives you a new pascal compiler.
3) Compile your Pascal source code with your own newly produced pascal compiler. So now you have your own product.

I see no reason why the same shouldn't be done with C++