MIDL Property Pages
The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.
The latest version of this topic can be found at MIDL Property Pages.
The MIDL node contains several property pages. To access them. right-click on the .idl file in Solution Explorer.
For information on how to programmatically access MIDL options for C++ projects, see VCMidlTool