void gtk_tree_view_scroll_to_point ( GtkTreeView* tree_view, int tree_x, int tree_y )
Scrolls the tree view such that the top-left corner of the visible
tree_y are specified
in tree coordinates. The
tree_view must be realized before
this function is called. If it isn’t, you probably want to be
tree_y are -1, then that direction isn’t scrolled.