This documentation is archived and is not being maintained.

LABRADOR Attributes Sample: Implements a Server with No User Interface 

Download sample

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 noteSecurity 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. Microsoft assumes no liability for incidental or consequential damages should the sample code be used for purposes other than as intended.

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.


This sample uses the following attributes:

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


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


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.

See Also

Other Resources

ATL Attributes Samples