isf-qt: ISF-Qt (Qt4 ISF format library) isf-qt: isf-qt: ISF-Qt is a library, written in C++ with the Qt 4 toolkit, which is isf-qt: capable of reading and writing the ISF format. ISF stands for "Ink isf-qt: Serialized Format", and is the disk serialization format used by the isf-qt: Windows.Ink C# library and by the TabletPC platform, but also by isf-qt: applications like Windows Live Messenger - which uses ISF to transfer isf-qt: handwriting messages. isf-qt: isf-qt: isf-qt: