如何读取内存中的数据?

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所属分类:[开发技巧]

 

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
    {用十六进制查看内存的函数; 参数1是内存起点, 参数2是以字节为单位的长度}
function ToHex(P:PByteArray; Bit: Integer):string;
var
  i: Integer;
begin
  for i := 0 to Bit - 1 do
    Result := IntToHex(P^[i],2)+Chr(32)+Result;
    Result := TrimRight(Result);

end;

{用二进制查看内存的函数; 参数1是内存起点, 参数2是以字节为单位的长度}
function ToBin(p:PByteArray;bit:Integer):string;
const
    Convert: array['0'..'F'] of string = (
    '0000', '0001', '0010', '0011', '0100', '0101', '0110', '0111', '1000', '1001',
    '', '', '', '', '', '', '', '1010', '1011', '1100', '1101', '1110', '1111');
var
  i: Integer;
  s: string;
begin
  S:= ToHex(p,Bit);
  for I := 1 to Length(s) do
     if s[i]<>chr(32) then
       Result := Result + Convert展开]
     else
       Result:= Result + chr(32);
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  Num: Integer;
begin
  Randomize;
  Num:= Random(MaxInt);
  ShowMessage(IntToStr(num)+ #10#13#10#13+ToHex(@num,4)+#10#13#10#13+ToBin(@num,4));
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  str: string;
begin
  str:= 'I Like Delphi';
  ShowMessage(str + #10#13#10#13 +
              ToHex(@str[1], Length(str)*SizeOf(str[1])) + #10#13#10#13 +
              ToBin(@str[1], Length(str)*SizeOf(str[1])));;
end;

end.

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