About Dragging and Dropping - Win32 Programmer's Reference (win32.hlp)

About Dragging and Dropping

A Win32- based application should fully support the source and target drag and drop capabilities provided by OLE. One of the most attractive features of drag and drop in OLE is that the code that handles the actual data transfer your implementation of the IDataObject interface is reusable. You will be able to use the same code to implement cut and paste. OLE separates what the user does to cause the data transfer from how the applications actually transfer the data. This allows you to use the same "back-end" IDataObject interface for any number of ways that the user may want to transfer data.

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