I have published four part postings about wrapping the newest version of libHaru to generate PDF documents and based on that how to create a single page reporting software.
The software was written from ground up over the last four days (porting to libHaru/64 bit), though we used a similar version in our products (based on libHaru 2.3.0/32 bit) - but we ported that from VASmalltalk to C# (after using it for 13 years) this month.
The postings are written in German - but the content should be clear.