Hi Joone, On Mon, Sep 21, 2009 at 2:07 PM, Joone Hur <joone@xxxxxxxx> wrote: > In this case, if there are a lot of items, the middle part of tree > view is not rendered properly during scrolling. > I think if the height of gdkwindow in the treeview is over than > 32767px, it seems not like being rendered well. I have come across this problem before. Putting tree views in a view port will cause the view port to create a very large X window (with a height larger than 32768 pixels). Such large windows have to be handled specially (see gtk+/x11/gdkgeometry-x11.c in the GTK+ source code of versions 2.16.x and lower). I suspect there is a bug in the geometry code causing this. I've started debugging this one day, but have never finished it. GTK+ 2.18 introduces client side windows and removes all the gdkgeometry code. Because of this, things work fine under GTK+ 2.18 and the problem does not occur. However, generally you should not put GtkTreeView (or any other "scrollable" widget such as GtkIconView) in a box and then in a view port. GtkTreeView, GtkIconView, etc have been designed to be put *directly* into a GtkScrolledWindow. If you do not do so, several things related to scrolling in the widget will be broken (for example, keyboard navigation and programmatic scrolls using gtk_tree_view_scroll_to_point()) and because such a large window will have to be created, a lot of memory will be used. When put directly into a GtkScrolledWindow, several "tricks" are used to avoid creating such a large window, drastically reducing memory consumption and making it possible to have lists with a very large amount of nodes. Hope this helps. regards, -kris. _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
