Summary

It is likely that an application will support IPC by using several of the mechanisms described in this topic. For example, all Win32-based applications should provide at least minimal support for the clipboard. In addition, DDE and OLE may offer the application an opportunity to communicate in a loosely coupled way with a wide variety of applications that support these protocols. The great strength of these loosely coupled mechanisms is that a developer can enable an application to share data with other applications without knowing anything about the applications themselves. By supporting the protocols for the clipboard, DDE, and OLE, the developer is assured of a growing number of applications with which the application can share data. As new applications are written that support these protocols, the developer's application will be ready to communicate with them.

As an application becomes more sophisticated, a developer may find it advantageous to break up the application into tightly coupled cooperating processes that use shared memory, pipes, or RPC to communicate. These tightly coupled mechanisms can provide high-performance extensions to the application. But when adding these more specialized IPC methods, the developer should not abandon the more loosely coupled IPC methods that allow the application to share data in a general way with most other Win32-based applications.

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