Generating OO documents(calc) from scratch- new project

<first post warning/>
Hello. 
I'm currently working on a bit of code, for a dll, that generates OO 
calc files.

It's initially for Oulu University's Factory project, meant as an export 
tool, but
since I'm not technically working for OU right now, we're considering 
letting
the code go free. I guess that for now, it's kinda "my" code.

Anyway, this little library will be generating calc sheets based on 
simple requests
in the style of... let's say,

  OOfile *p = new OOfile;
  *p->openFile("filename");
  *p->WriteCell(posx, posy, stringText );
  *p->closeFile();

This is what we need, initially...  Eventually, I guess I'd aim for 
feature-complete,
so to speak.

I'll be writing this as pure C++ with no windows-ties except what's 
necessary
for DLL compilation. I'll be looking into the possibility of Linux at 
the very least
eventually.

The main reason this li'l project is getting started is because we 
couldn't find anything
ready-made like this existing. I've looked at Xfilter, but I'm still not 
sure if it could have
been used for this purpose. T_T

Anyway, I have some questions...

1. There really isn't any ready-made software that I can say to, 
"generate an OO doc for me like this and this?"
     Still sorta disbelieving that....

2. Going Open... Is GPL the way to go? pointers for more info?

3. As mentioned, I'm not working of OU right now, meaning I'm 
unemployed... I wonder, would this project
    be eligible for the Google Summer of Code thing? Opinions? ^_^;

4. Do other people have need for a library like this? Or am I just 
shouting to the wind, so to speak.