Welcome to the
DP.
At least two ebook formats can be created through a Delphi program (i know because i did it myself).
For MS Reader (.lit) i have successfully accessed the litgen.dll which is available from Microsoft. It is a
COM object with a small twist for instanciating.
For Mobipocket (.mobi) i have enslaved their commandline tool mobigen.exe which is available from their website.