when i run rtiddsgen -language C++ -example i86Win32VS2010 msg.idl in the command prompt,it display as this:
Running rtiddsgen version 4.5e, please wait ...
The preprocessor 'CL.EXE' cannot be found in your path.
If your IDL file contains preprocessor directives, be sure that 'CL.EXE'
is in your path or specify an alternative preprocessor through the use of the
flag -ppPath.
If your IDL file doesn't contain preprocessor directives you can disable the
use of the preprocessor using the flag -ppDisable.
Done (failures)
