Great job, Leo! Congrats!
I tried your SDK, looks like the applications are implemented via file parsers plugins for the 'viewer' application?
There is a way to install plugins via a special .lib or .libs folder on a flash disk, so script applications can be installed
as a plugin to run .uspl files from the 'bookshelf' application without the need for .exe.fb2 approach. It is also possible to embed scripts parser into the firmware.
I tried writing programs as standalone applications for the Hanlin V3 using a mix of V2 SDK, V3 SDK and OpeninkPot tools, but created only a simple program.
There is now Java VM in the latest firmware from Jinke, but again no SDK.
Plan to write some USPL scripts
Everyone who is interested in software for e-Readers is welcome at my web-site: http://eink-apps.com/
(suggestions and comments are welcome