/ms_ext switch

Effective with MIDL version 3.0, the features enabled by the ms_ext switch are now the default mode for the MIDL compiler.

midl /ms_ext

Switch Options

This switch has no parameters.

Using the switch will not generate a compiler error, so you do not have to remove references to /ms_ext or /c_ext from an existing makefile.

The following Microsoft extensions to OSF DCE are now available by default:

Interface definitions for OLE objects. For more information on the files generated for OLE interfaces, see Files Generated for a COM Interface
A [callback] attribute specifying a static callback function on the client
cpp_quote(quoted_string) and #pragma midl_echo
wchar_t wide-character types, constants, and strings
enum initialization (sparse enumerators)
Expressions as size and discriminator specifiers
Handle extensions
Pointer-attribute type inheritance
Multiple interfaces
Definitions outside of the interface block
You can omit directional attributes [in, out]