COM Debugging Tools
Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
This topic lists tools that can help you test and inspect COM programs.
OLE/COM Object Viewer
OLEVIEW displays the ActiveX and OLE objects installed on your computer and the interfaces they support. It also allows you to edit the registry and look at type libraries.
Microsoft Foundation Class Samples
The MFC ActiveX samples OCLIENT and SUPERPAD are also available to test your applications against. Full source code for these samples is included.