insert
Description:
Creates a new row at position.
Note:
Use [class@Gtk.TreeListModel] instead
If parent is non-null, then the row will be made a child of parent. Otherwise, the row will be
created at the toplevel.
If position is `-1` or is larger than the number of rows at that level, then the new row will be inserted to the end of the list.
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 @set or
set_value.
Parameters:
| this |
A `GtkTreeStore` |
| iter |
An unset `GtkTreeIter` to set to the new row |
| parent |
A valid `GtkTreeIter` |
| position |
position to insert the new row, or -1 for last |