# INPROC Sample: Demonstrates an In-Process Automation Server Application (C++ Samples)

INPROC is an in-process Automation server. Unlike the other Automation server samples provided, INPROC can be loaded as a dynamic-link library (DLL) in the client's address space. This sample uses the native compiler COM support. See the MFC INPROC sample for more information.

Security Note
This sample code is provided to illustrate a concept and should not be used in applications or Web sites, as it may not illustrate the safest coding practices.

# Building and Running the Sample

Note
If you are running Visual C++ Express Edition, you might need to install the Platform SDK before running this sample. For information on how to do this, see How to: Use Visual C++ Express Edition with the Microsoft Platform SDK.

#### To build and run this sample

1. Open the solution inproc.sln.

2. On the Build menu, click Build Solution.

3. Register the server:

   1. Change the path in server\inproc.reg to the path of the inproc.dll you just built.

   2. Run `regedit server\inproc.reg`.

4. Set the ipdrive project as the startup project (right-click the project node and click Set as StartUp Project) and run this application.

# Comparison with the MFC Version

The differences between this sample and the MFC sample with the same name are:

- The COleDispatchDriver class is no longer necessary. Instead, #import is used to import a type library.

- The _bstr_t and _variant_t wrapper classes are used to simplify operations of BSTR and VARIANT types.

- __declspec(property) is used to simplify assignment operations for properties of COM objects.

- COM error handling is now performed by using the _com_error class.

With the Visual C++ native compiler COM support, the resulting sample code is shorter and more efficient. The MFC-based INPROC sample uses dispinterfaces only. Compare this sample with the MFC version to see the differences in source code.

# Keywords

This sample demonstrates the following keywords:

dispinterface; #import; _com_ptr_t; _variant_t; _bstr_t; _com_error