Windows allows the user to transfer objects within a data file to the desktop or a folder. The result of the transfer operation is a file icon called a scrap. An OLE application automatically supports the creation of scrap files if its IDataObject interface supports enough data formats so that the drop target can create either an embedding or a shortcut object. You do not need to add any other functionality to your application to allow the user to create a scrap file. However, there are two optional features you may wish to add to your application: round-trip support and caching additional data formats in a scrap file. Round-trip support means that an object can be dragged out of a document and into a new container and then dragged from the new container back into the original document.

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