Summary

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In this chapter we studied mixing managed and unmanaged code running under Windows. We saw how to call legacy COM components from within the managed .NET environment using a Runtime Callable Wrapper or RCW. We also looked at the use of a COM Callable Wrapper (CCW) to enable a COM client to call a .NET component. Finally, we looked at using Platform Invocation Services (PInvoke), and saw how automatic marshaling is provided for both in and out parameters.

We have come to the end of a long journey, which we hope will be the first of many journeys in the world of .NET. We hope you enjoyed the trip. Good luck on your .NET programming projects!

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