code: def CheckHeader(context, header, include_quotes = '<>', language = None):
      
      prog_prefix, hdr_to_check = \
                   createIncludesFromHeaders(header, 1, include_quotes)
      res = SCons.Conftest.CheckHeader(context, hdr_to_check, prog_prefix,
                                       language = language,
                                       include_quotes = include_quotes)
      context.did_show_result = 1
      return not res
docs: A test for a C or C++ header file.