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    <p>Because I haven't "treeview.ui" file, you referenced, I port the <a href="http://www.pygtk.org/pygtk2tutorial/sec-TreeViewDragAndDrop.html" rel="nofollow">drag'n'drop treeview example of pygtk.</a></p> <p>This might be also an example on how to convert old pygtk code to pygi. I only test this code with python3.</p> <pre><code>#!/usr/bin/env python # example treeviewdnd.py from gi.repository import Gtk, Gdk, Pango, GObject class TreeViewDnDExample: TARGETS = [ ('MY_TREE_MODEL_ROW', Gtk.TargetFlags.SAME_WIDGET, 0), ('text/plain', 0, 1), ('TEXT', 0, 2), ('STRING', 0, 3), ] # close the window and quit def delete_event(self, widget, event, data=None): Gtk.main_quit() return False def clear_selected(self, button): selection = self.treeview.get_selection() model, iter = selection.get_selected() if iter: model.remove(iter) return def __init__(self): # Create a new window self.window = Gtk.Window() self.window.set_title("URL Cache") self.window.set_size_request(200, 200) self.window.connect("delete_event", self.delete_event) self.scrolledwindow = Gtk.ScrolledWindow() self.vbox = Gtk.VBox() self.hbox = Gtk.HButtonBox() self.vbox.pack_start(self.scrolledwindow, True, True, 0) self.vbox.pack_start(self.hbox, False, True, 0) self.b0 = Gtk.Button('Clear All') self.b1 = Gtk.Button('Clear Selected') self.hbox.pack_start(self.b0, True, True, 0) self.hbox.pack_start(self.b1, True, True, 0) # create a liststore with one string column to use as the model self.liststore = Gtk.ListStore(str) # create the TreeView using liststore self.treeview = Gtk.TreeView(self.liststore) # create a CellRenderer to render the data self.cell = Gtk.CellRendererText() # create the TreeViewColumns to display the data self.tvcolumn = Gtk.TreeViewColumn('URL', self.cell, text=0) # add columns to treeview self.treeview.append_column(self.tvcolumn) self.b0.connect_object('clicked', Gtk.ListStore.clear, self.liststore) self.b1.connect('clicked', self.clear_selected) # make treeview searchable self.treeview.set_search_column(0) # Allow sorting on the column self.tvcolumn.set_sort_column_id(0) # Allow enable drag and drop of rows including row move self.treeview.enable_model_drag_source( Gdk.ModifierType.BUTTON1_MASK, self.TARGETS, Gdk.DragAction.DEFAULT| Gdk.DragAction.MOVE) self.treeview.enable_model_drag_dest(self.TARGETS, Gdk.DragAction.DEFAULT) self.treeview.drag_dest_add_text_targets() self.treeview.drag_source_add_text_targets() self.treeview.connect("drag_data_get", self.drag_data_get_data) self.treeview.connect("drag_data_received", self.drag_data_received_data) self.scrolledwindow.add(self.treeview) self.window.add(self.vbox) self.window.show_all() def drag_data_get_data(self, treeview, context, selection, target_id, etime): treeselection = treeview.get_selection() model, iter = treeselection.get_selected() data = bytes(model.get_value(iter, 0), "utf-8") selection.set(selection.get_target(), 8, data) def drag_data_received_data(self, treeview, context, x, y, selection, info, etime): model = treeview.get_model() data = selection.get_data().decode("utf-8") drop_info = treeview.get_dest_row_at_pos(x, y) if drop_info: path, position = drop_info iter = model.get_iter(path) if (position == Gtk.TreeViewDropPosition.BEFORE or position == Gtk.TreeViewDropPosition.BEFORE): model.insert_before(iter, [data]) else: model.insert_after(iter, [data]) else: model.append([data]) if context.get_actions() == Gdk.DragAction.MOVE: context.finish(True, True, etime) return def main(): Gtk.main() if __name__ == "__main__": treeviewdndex = TreeViewDnDExample() main() </code></pre>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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