Appends a new row to tree_store.
If parent is non-null, then it will append the new row after the last child of parent, otherwise it will append a row to the top level.
The iter parameter will be changed to point to this new row. The row will be empty after this function is called. To fill in values, you need to call gtk.tree_store.TreeStore.set or gtk.tree_store.TreeStore.setValue.
An unset gtk.tree_iter.TreeIter to set to the appended row
A valid gtk.tree_iter.TreeIter
Deprecated: Use gtk.tree_list_model.TreeListModel instead
Appends a new row to tree_store.
If parent is non-null, then it will append the new row after the last child of parent, otherwise it will append a row to the top level.
The iter parameter will be changed to point to this new row. The row will be empty after this function is called. To fill in values, you need to call gtk.tree_store.TreeStore.set or gtk.tree_store.TreeStore.setValue.