Delphi 读取内存数据

procedure TForm1.btn1Click(Sender: TObject);
const
  GameName ='对对碰角色版';
var
  GameH:HWND;             //定义进程窗口句柄
  PidGame:DWORD;          //定义进程ID
  readByte:DWORD;         //实际读取字节
  Gamehprocess: THandle;  //可以理解为DWord，也就是非负数的整数类型  定义进程句柄
  SitNum :DWORD;
begin
  GameH:=FindWindow(nil,GameName);                                              //获取游戏窗口句柄
  GetWindowThreadProcessId(GameH,PidGame) ;                                     //获取进程ID
  Gamehprocess:=OpenProcess(PROCESS_VM_READ or PROCESS_VM_WRITE,false,PidGame); //获取进程句柄
  Readprocessmemory(gamehProcess, Pointer($490FC0),@SitNum,4,readByte);         //读出坐位号
  Self.edt1.Text:=IntToHex(SitNum,8);                                           //显示到编辑框中
end;