Insert the @child into the @box at @position.
If a sort function is set, the widget will actually be inserted at the calculated position.
If @position is -1, or larger than the total number of items in the @box, then the @child will be appended to the end.
the GtkWidget to add
the position to insert @child in
See Implementation
Insert the @child into the @box at @position.
If a sort function is set, the widget will actually be inserted at the calculated position.
If @position is -1, or larger than the total number of items in the @box, then the @child will be appended to the end.