anchor.diff:  import '../structs.dart';
   import '../win32.dart';\n
   ''';
  -  } else {
  -    return '''
  -import 'dart:ffi';
  -
  -import 'IUnknown.dart';
  -import 'combase.dart';
  -''';
  -  }
   }
   
   const typeMappings = <String, String>{
  
positive.code: }
  
  String printHeader(Interface interface) {
    if (interface.generateClass) {
      return '''
  import 'dart:ffi';
  
  import 'package:ffi/ffi.dart';
  
  import 'IUnknown.dart';
  import 'combase.dart';
  import 'comerrors.dart';
  
  
negative.code:   'LRESULT': 'IntPtr',
    'DESKTOP_WALLPAPER_POSITION': 'Int32',
    'WNDPROC': 'IntPtr',
    'REFGUID': 'GUID',
    'INT': 'Int32',
    'UINT': 'Uint32',
    'DWORD': 'Uint32',
  