"Marcin Kalicinski" <kalita@poczta.onet.pl> wrote in message news:e2iggr$9lk$1@sea.gmane.org... : In ptree, instead of : : settings["whatever.you.name.it"] = QPoint(10, 10); : : you do: : : settings.put("whatever.you.name.it", QPoint(10, 10)); Now: as any JSON/etc user would expect, the QPoint structure should be stored as a 2-field node: [ 10, 10 ] or { "x": 10 , "y": 20 } I asked this before as it is not documented, but I still do not have an answer: what exactly does it take to achieve this ? : > Speaking again about program_options and property_tree interaction: if : > this : > is ever to work, I want property_tree to expose some "changed" events, : > like : > W3W DOM has, that I can catch to sync data back to storage. Without that, : > smooth configuration saving will be impossible. ... : If you need notifications - and I'm sure there are cases where you must have : them - this is the wrong library. Use program_options instead (when it adds : support for saving). What is really being asked for here is (yet another) different interface for editing a ptree container in memory.... Ivan -- http://ivan.vecerina.com/contact/?subject=NG_POST <- email contact form