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Windows CE enables you to synchronously perform the WriteFile, ReadFile, and WaitCommEventfunctions.
Windows CE does not support the overlapped I/O features of Windows NT. The lpOverlappedparameter to ReadFileor WriteFilemust be NULL. Therefore, Windows CE cannot signal the event that is passed in when the I/O operation is completed. However, Windows CE does support simultaneous synchronous or asynchronous calls to ReadFileor WriteFilemade by separate threads that are overlapped in time; this is not supported in Windows NT.
Last updated on Tuesday, May 18, 2004