Hi I'm fairly new to Wt, currently using 3.3.1 in Ubuntu
I'm trying to create a WTreeView browser for a large existing database. The data has an inherent tree structure of 4 levels with over 300000 items at the top level and over 10 million at the lowest level. I can display a subset of the data by populating the WStandardItemModel of the WtreeView, this looks good and behaves well but I can't find how to extend this to the full dataset. Obviously I can't load all of the data at once so I was hoping to start with a subset (say a 100 top level items + child data) and then respond to signals representing scrolling/paging. Here I would add new data (at beginning or end) and remove data out of scope. My problem is that I can't discover which signal I should use, None of the signals available in WTreeView, WStandardItemModel or WAbstractItemModel seem to be suitable. Possibly my strategy is incorrect, any help would be welcome. Regards Nigel ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk _______________________________________________ witty-interest mailing list witty-interest@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/witty-interest
