COMMAP Attributes Sample: Demonstrates COM Interface Map Entry Macros
The COMMAP attributes sample shows how different COM interface map entry macros are used.
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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. |
To get samples and instructions for installing them:
On the Visual Studio Help menu, click Samples.
For more information, see Visual Studio Samples.
The most recent version and complete list of samples is available online from the Visual Studio 2008 Samples page.
You can also locate samples on your computer's hard disk. By default, samples and a Readme file are copied into a folder under \Program Files\Visual Studio 9.0\Samples\. For Express editions of Visual Studio, all samples are located online.
Building and Running the Sample
To build and run this sample
Open the solution file COMMap.sln.
From the Build menu, clickBuild Solution.
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.