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implementation
{$R *.dfm}
function M1_card_data(block_M1:Integer;key:string;keytype:Integer;data:string;error:string):integer;stdcall;
external 'WatchReader.dll';
procedure TForm1.Button1Click(Sender: TObject);
var
block_M1,temp,keytype:Integer;
key,data,error :string;
begin
block_M1:=StrToInt(Edit1.Text);
key:=Edit2.Text;
keytype:=0;
temp:=M1_card_data(block_M1,key,keytype,data,error);
mmo1.Lines.Add(data);
end;