I was looking for a Qt implementation (since Qt already support export of rich text to odt) but found none of them. Then I was astonished that I can't find any C++ class to read/write ods files.
I need to import/export tables with basic formating and was thinking that using a open source format would be a good idea. But it looks like it is mission impossible in C++
I wrote a Qt5 library for working with .ods, check it out: https://github.com/f35f22fan/QOds