# LABRADOR Attributes Sample: Implements a Server with No User Interface

The LABRADOR attributes sample shows how to use ATL to implement an EXE server without any user interface. The server allows creation of an object that supports two custom interfaces, defined in Labrador.idl.

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

This sample uses three components: the server, the marshaling DLL, and the driver.

#### To build and register the components

1. Open the solution file Labrador.sln

2. From the Build menu, click Build Solution.

   The server, the marshaling DLL, and the driver will be built and registered.

#### To run the driver

1. In Solution Explorer, right-click the labdriv project and select Set as StartUp Project.

2. From the Debug menu, click Start Without Debugging.

   The driver will create an object, make a few calls into it, and then release it.

# Attributes

This sample uses the following attributes:

aggregatable, coclass, default, emitidl, helpstring, in, module, object, out, progid, string, threading, uuid, version, vi_progid

# Keywords

This sample uses the following keywords:

_CrtDumpMemoryLeaks; _tcsicmp; _tcstok; _tprintf; _vstprintf; ATLASSERT; BEGIN_COM_MAP; BEGIN_OBJECT_MAP; CComModule::Init; CComModule::RegisterClassObjects; CComModule::RevokeClassObjects; CComModule::Unlock; CComModule::UnregisterServer; CComObjectRoot; CoCreateInstance; COM_INTERFACE_ENTRY; CoUninitialize; DECLARE_NOT_AGGREGATABLE; DECLARE_REGISTRY; DispatchMessage; END_OBJECT_MAP; GetCurrentThreadId; GetMessage; OBJECT_ENTRY; OutputDebugString; PostThreadMessage; Trace; va_end; va_list; va_start; wcscpy

Note
Some of the samples, such as this one, have not been modified to reflect the changes in the Visual C++ wizards, libraries, and compiler, but still demonstrate how to complete your desired task.