Insert the child into the list_box at position. If a sort function is
set, the widget will actually be inserted at the calculated position and
this function has the same effect of gtk_container_add().
If position is -1, or larger than the total number of items in the
list_box, then the child will be appended to the end.
Insert the child into the list_box at position. If a sort function is set, the widget will actually be inserted at the calculated position and this function has the same effect of gtk_container_add(). If position is -1, or larger than the total number of items in the list_box, then the child will be appended to the end.