In Adding portable container parts, you saw how to use portable container parts to build a card game. In this section you will reuse these parts and add image drag and drop support to the card game. You will use the nonvisual reusable objects that were built in Adding list parts.

In this section, you will also create an application that uses platform drag and drop support. With platform drag and drop, you can drag objects among images and applications. With image drag and drop, you are limited to dragging and dropping objects within a single Smalltalk image.