GTK+ 2.6.2

Run the following test case.  If you press "Shift-F10" in the tree view, the
context menu for the typeahead window appears in the bottom right corner of the
desktop.  Even worse, if the tree view has its own context menu (for example,
the tree views in Eclipse), both context menus appear.

int main (int argc, char **argv)
{
    GtkWidget *window;
    GtkTreeStore *store;
    GtkCellRenderer *renderer;
    GtkTreeViewColumn *column;
    GtkWidget *tree;
    int i;

    gtk_init (&argc, &argv);
    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    g_signal_connect (G_OBJECT (window), "destroy",
                      G_CALLBACK (gtk_main_quit), 0);
    g_signal_connect (G_OBJECT (window), "delete_event",
                      G_CALLBACK (gtk_main_quit), 0);
    store = gtk_tree_store_new (1, G_TYPE_STRING);
    tree = gtk_tree_view_new_with_model (GTK_TREE_MODEL (store));
    renderer = gtk_cell_renderer_text_new ();
    column = gtk_tree_view_column_new_with_attributes
               ("Column", renderer, "text", 0, 0);
    gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
    gtk_container_add (GTK_CONTAINER (window), tree);
    for(i = 0; i < 10; i++) {
        GtkTreeIter iter;
        gtk_tree_store_append (store, &iter, 0);
        gtk_tree_store_set (store, &iter, 0, "Please press Shift-F10", -1);
    }
    gtk_widget_show_all (window);
    gtk_main ();
    return 0;
}