# COMMAP Attributes Sample: Demonstrates COM Interface Map Entry Macros

The COMMAP attributes sample shows how different COM interface map entry macros are used.

The COMMAP sample is the nonattributed version of this sample.

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

#### To build and run this sample

1. Open the solution file COMMap.sln.

2. From the Build menu, click Build Solution.

3. After the sample builds, open commap.htm in your Web browser. Commap.htm includes comments about each type of map entry.

# Attributes

This sample uses the following attributes:

- COMMap coclass, com_interface_entry, default, dual, emitidl, helpstring, id, implements_category, in, module, object, out, pointer_default, progid, propget, retval, threading, uuid, version, vi_progid

- COMMap/Aggreg coclass, default, dual, emitidl, helpstring, id, module, object, out, pointer_default, progid, propget, retval, support_error_info, threading, uuid, version, vi_progid

# Keywords

This sample uses the following keywords:

BEGIN_COM_MAP; CComCoClass; CComModule::GetClassObject; CComModule::GetLockCount; CComModule::Init; CComModule::RegisterServer; CComModule::Term; CComModule::UnregisterServer; CComObjectRoot; CComTearOffObjectBase; COM_INTERFACE_ENTRY; COM_INTERFACE_ENTRY_AGGREGATE; COM_INTERFACE_ENTRY_AGGREGATE_BLIND; COM_INTERFACE_ENTRY_AUTOAGGREGATE; COM_INTERFACE_ENTRY_AUTOAGGREGATE_BLIND; COM_INTERFACE_ENTRY_CACHED_TEAR_OFF; COM_INTERFACE_ENTRY_TEAR_OFF; DECLARE_GET_CONTROLLING_UNKNOWN; DECLARE_REGISTRY_RESOURCEID; DisableThreadLibraryCalls; END_COM_MAP; IDispatchImpl; ISupportErrorInfo; SysAllocString

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.