MIDL Compiler Options

You can use the following command-line options to override some of the default behavior of the MIDL compiler and to choose optimizations appropriate for your application. For a complete listing of MIDL command-line options see the MIDL Command-Line Reference.

Command line switch Description
/acf Use to supply an explicit ACF filename. This switch also enables the use of different interface names in the IDL and ACF files.
/dlldata Specifies a filename for the generated DLL data file for a proxy DLL. The default filename is Dlldata.c.
/env Directs MIDL to generate stubs or a type library for a target environment, such as Macintosh or Windows® 3.11 or earlier.
/header, /h Specifies the name of the interface header file. The default name is that of the IDL file with an .h extension.
/iid Specifies an interface identifier filename that overrides the default interface identifier filename for a COM interface.
/lcid Provides full DBCS support so you can use international characters in your input files, file names, and directory paths.
/no_format_opt By default, MIDL eliminates duplicate descriptors in order to reduce code size. This switch turns off this optimizing behavior.
/Oi, /Oic, /Oif Directs MIDL to use a fully-interpreted marshaling method. The /Oic and /Oicf switches provide additional performance enhancements.
/out Specifies the directory to which the MIDL compiler writes output files. The output directory can be specified with a drive letter, an absolute path name, or both. The default is that MIDL writes the files to the current directory.
/proxy Specifies the name of the interface proxy file for a COM interface. The default name is that of the IDL file plus "_p.c".
/tlb Specifies the name of the type library file. The default name is that of the IDL file, with a .tlb extension.

See Also

General MIDL Command-Line Syntax