Well, thanks. I will use the treeview. Cheers, Blaise ----- Message d'origine ----- De: "Tristan Van Berkom" <tvb@xxxxxxxxx> Date: Sat, 1 Dec 2007 15:22:20 -0200 Sujet: Re: Container performance Cc: gtk-list@xxxxxxxxx, gtk@xxxxxxxxxxx >On Dec 1, 2007 10:57 AM, Junior Polegato - GTK+ & GTKmm < >gtk@xxxxxxxxxxxxxxxxxxxxx> wrote: > >> jcupitt@xxxxxxxxx escreveu: >> > On 12/1/07, digicapt - gtk dev <gtk@xxxxxxxxxxx> wrote: >> > >> >> If you try following code, you'll see that filling a container with >> 4000 >> >> entries (first button) is about 20 times slower than filling a >> container with >> >> 4000 labels (second button) : 1 seconds for labels on my PC, 20 seconds >> for >> >> the edits. >> >> >> > Entries are just much, much more complicated. Creating 4000 edit >> > widgets is always going to be slow. >> > What you need to do is use a treeview instead, and have a editable as >> > a cell renderer. Now it will display like a label (it should be even >> > quicker than the label case), but when you click on an item, it will >> > turn into an edit widget for the time that you are using it. >> > Read about it here: >> > http://library.gnome.org/devel/gtk/unstable/TreeWidgetObjects.html >> > John >> >> Hi, >> >> You can use this technical: insert the labels with formatation >> like edit and control the mouse click and the tab key. >> > > >A Treeview is really what you will be wanting here, the question is >answered but I just wanted to add; Allocating a widget is effectively >allocating screen realestate - you dont want to go overboard with >how many actual widgets you are allocating for data display >(if you can only see 10 rows of data entry widgets, you should be >able to use a scrollbar just to change the data that those widgets >are displaying/editing, its not effective to allocate 10,000 rows of label, >button, entry etc and just put into a scrolled window, even if this >evil sounds a bit tempting ;-) ). Treeview widgets try to make this >task effective and optimized for displaying/editing dynamic and >potentially huge datasets, in some cases you might want to use >widgets instead and just update the contents - depending on >what visual effect you want to achieve or how huge your dataset >can potentially be. > >Cheers, > -Tristan > _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
