I'll reword this in case it helps to get a response. The gtk_tree_store_move*() functions http://developer.gnome.org/doc/API/2.0/gtk/GtkTreeStore.html#gtk-tree-store-move-before only work with rows at the same level in the tree. But the default drag and drop behaviour of a GtkTreeStore can happily move rows between different levels. So is there something that we can reuse in order to efficiently move rows programatically between levels? > Hey, > > I've been working with Gtkmm to create a Gtk::TreeStore that is capable of > re-parenting rows. As far as I can tell the C++ api (and the underlying C > api) have no method for moving rows between different parent rows. Murray > Cumming suggested I inquire here to see if I there's an easier way to > accomplish what I want. > > I've really only got the C++ side of things to go on, so if this > explanation > is wrong, ask and I'll try and track down what parts of the C api I'm > actually using. > > The basic idea is that instead of doing a real re-parent type of > operation, > I just copy from one node in a tree to a new node and delete the original > node. > > In C++ this requires copying from one Gtk::TreeModel::iterator to another > Gtk::TreeModel::iterator. > > The gtkmm api has two methods in the TreeModel that are: > > Gtk::TreeModel::get_value_impl( Gtk::TreeModel::iterator& iter, gint > column, > Glib::ValueBase& value ) > Gtk::TreeModel::set_value_impl( Gtk::TreeModel::iterator& iter, gint > column, > Glib::ValueBase& value ) > > These two methods seem to be wrapping: > > gtk_tree_model_get_value( GtkTreeModel *tree_model, GtkTreeIter *iter, > gint > column, GValue *value ) ; > gtk_tree_store_set_value( GtkTreeStore *tree_store, GtkTreeIter *iter, > gint > column, GValue *value ) ; > > So all I do is to iterate over the columns in a Gtk::TreeModel and copy > one > Glib::ValueBase to the other. > > And repeat the copy procedure recursively. > > So there are two main questions: > > Is there something in the API that I'm missing that would allow me to move > an iterator from an arbitrary position in a GtkTreeStore to another > position? > > Is there an easier way to copy the values from on iterator to another? > > If anyone can make sense of that, I'd like to hear if I'm doing something > dumb. > > Thanks, > Paul > _______________________________________________ > gtk-list mailing list > gtk-list@xxxxxxxxx > http://mail.gnome.org/mailman/listinfo/gtk-list > Murray Cumming murrayc@xxxxxxxxxxx www.murrayc.com www.openismus.com _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
