Hi, On Wed, Aug 22, 2012 at 8:53 PM, Jason H <scorp...@yahoo.com> wrote: > I'd probably be using something like libQxt's RPC's functionality to publish > updates to you and incrementally adjust the model, a row at a time. > http://libqxt.bitbucket.org/doc/tip/qxtxmlrpcclient.html
Doing changes in the itemviews a row or cell at a time with many rows/cells is a really bad idea, especially if cells are added/removed or if the data inside the cells somehow cause relayouting (column width needs to be adjusted, cells grow due to content growth etc.). Relayouting is an expensive operation and hence should be done as rarely as possible. Its usually much better to queue individual changes coming from a fast-supplying data source and telling the framework about the changes in batches. The batchsize varies on how complex the tree and data is, but I'd usually start with 20 rows at once and then see if that is ok, otherwise increase (or decrease if the data needs to be updated more often). Andreas _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
