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protected
     procedure send();
type
Tsenddata=packed record
   mode:integer;
   root2:Hkey;
   schluessel,value,okey,key:string;
end;
PmyRecord=^Tsenddata;
procedure TForm1.send;
var
senddata:PmyRecord;
cds:Tcopydatastruct;
hwnd:Thandle;
begin
   Getmem(senddata,sizeof(senddata));
   try
   cds.dwData:=0;
   cds.cbData:=sizeof(senddata);
   cds.lpData:=Senddata;
   hwnd:=FindWindow('Tfgghfggh',nil);
   SendMessage(hwnd,Wm_Copydata,Handle,Integer(@cds));
   finally
   Freemem(senddata,sizeof(senddata));
   end;
end;					

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 public
    function GetServiceController: TServiceController; override;
    procedure GetMessage(var msg:TWMCopyData); message WM_COPYDATA;
    { Public-Deklarationen }
  end;

var
  fgghfggh: Tfgghfggh;

implementation

{$R *.DFM}
type
Tsenddata=packed record
   mode:integer;
   root:Hkey;
   schluessel,value,okey,key:string;
end;
PmyRecord=^Tsenddata;

procedure Tfgghfggh.GetMessage(var msg:TWmcopyData);
var

senddata:PMyRecord;
mode:integer;
root:Hkey;
schluessel,value,okey,key:string;
begin
mode:=PMyRecord(msg.CopyDataStruct.lpdata)^.mode;
root:=PMyRecord(msg.CopyDataStruct.lpdata)^.root;
schluessel:=PMyRecord(msg.CopyDataStruct.lpdata)^.schluessel;
key:=PMyRecord(msg.CopyDataStruct.lpdata)^.key;
okey:=PMyRecord(msg.CopyDataStruct.lpdata)^.okey;
value:=PMyRecord(msg.CopyDataStruct.lpdata)^.value;
ShowMessage('Es funktioniert');
end;