first HBCI action was invoked from C

[Christian Stimming]

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Okay, I added a preliminary bunch of C wrappers for the C++ HBCI library, and 
I wrote a tiny simple command line program in C that uses those C wrappers. 
(Well, the latter means basically porting 'aqmoney' from C++ to C.) 

Tonight I managed to invoke a HBCI communication for the first time. This was 
done by "cmoney --command=balance --account=my-account-nr --institute=my-BLZ 
- --country=280", where my-account-nr and my-BLZ have to be the ones from the 
*last* account mentioned in the configuration file .aqmoney/aqmoney.conf 
[1]. Then the same procedure as the one from aqmoney will start: OpenHBCI 
will ask me for the passphrase on the terminal input, and then OpenHBCI will 
do the HBCI action of asking for the account balance. Nothing fancy, and yet 
I'm absolutely impressed that this actually works from C just as is does from 
C++. 

So the next weeks will be filled with writing more C wrappers, porting more 
test code from C++ to C, and preparing the API for using it from within 
Gnucash. Still some time to come before GUI stuff shows up in Gnucash, but 
it's getting closer every week.

Christian

[1] I still don't know what a good C equivalent of list<HBCIAccount>, i.e. 
something like a linked list of HBCIAccount*, would be. In gnucash I would 
simply use a GList. But OpenHBCI is totally independent of Glib and/or GTK, 
so I can't use a GList as a return type of a C wrapper, since that would be 
the only cause for adding Glib/GTK to OpenHBCI dependencies. Anyone a better 
idea?
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