Xournal already has a port to the DR1000. You'd probably want to start with that. Mostly, the difficulty of porting depends on what it uses for the UI, and how tangled that might be with other parts of the app. GTK+ stuff is likely the easiest.
There are a couple things left out of the getting started doc for the SDK though. You need to also install intltool from apt-get, and when building hello-world (which is missing the build_all script the PDF references), you need to run autoreconf, intltool, configure, and make in that order or it won't build.
|