Problem DLL aufruf

[Gehstock]

Delphi-Quellcode:

typedef int (*callback) (char channel, int deb, int size);
extern "C"
{
__declspec(dllexport)
int __cdecl   upload_bin_image
            (
               char      channel,
               int         deb,
               int         size,
               const char   *szFichier,
               int         write_sam_file,
               char      *resultat
            );
__declspec(dllexport)
int __cdecl   download_bin_image
            (
               char      channel,
               int         deb,
               int         size,
               int         offset,
               const char   *fichier,
               const char   *path,
               char      *resultat
            );
__declspec(dllexport)
int __cdecl   set_dll_parameter(char opt, unsigned int param);
__declspec(dllexport)
int __cdecl   boot_bin_target(char channel, const char *fichier_fls, char *resultat2, char *resultat);
__declspec(dllexport)
char *__cdecl get_dll_version();
__declspec(dllexport)
int __cdecl   open_comm_port
            (
               char         channel,
               const char      *szPort,
               const char      *szPort2,
               unsigned int   speed,
               char         *resultat
            );
__declspec(dllexport)
int __cdecl   close_comm_port(char channel, char *resultat);
__declspec(dllexport)
int __cdecl   force_target_reset(char channel, char, char, char, char, char *);
__declspec(dllexport)
int __cdecl   init_callback(callback fct);

hab ich mit

Delphi-Quellcode:

type
 callback = Integer;
 channel = Integer;
 deb = Integer;
 Size = Integer;
type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;



var
  Form1: TForm1;

implementation

{$R *.dfm}

Function upload_bin_image(Channel,deb,size : Integer; OutFile : String;
         write_sam_file : Integer; result1 : String):Integer; cdecl; external 'DownloadDll.dll';
Function download_bin_image(Channel,deb,size,Offset : Integer;
         InFile,Path : String; result1 : String):Integer; cdecl; external 'DownloadDll.dll';
Function set_dll_parameter(opt : String; param : Integer): Integer;
         cdecl; external 'DownloadDll.dll';
Function boot_bin_target(channel : Integer; flsFile, result2, result1 : String): Integer;
         cdecl; external 'DownloadDll.dll';
Function get_dll_version: String; cdecl; external 'DownloadDll.dll';
Function close_comm_port(channel : Integer; result1 : String): Integer;
         cdecl; external 'DownloadDll.dll';
Function open_comm_port(channel : Integer; Port1,Port2 : String; Speed : Integer; result1 : String): Integer;
         cdecl; external 'DownloadDll.dll';

übersetzt aber schon die Function get_dll_version gibt falsche werte aus