Program updated, the download link remains the same.And Source is included(not commented,maybe a little bit hard for you to read it).
I implemented the other 2 Decoding methods,but not Encoding, so it can now correctlly(maybe not,because I don't have NF Client anymore, so I can't test it) display and export pictrues, which are encoded in this type, but you can't import. Some error check added.
If there are still bugs, please let me know how it happens, which BMPtype and which JumpType(it is shown in status bar in Main Window) the program is handling with.