hook键盘钩子_非dll

unit Unit1;
// download by http://www.codefans.net
interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
  StdCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    lbl1: TLabel;
    lbl2: TLabel;
    edt1: TEdit;
    edt2: TEdit;
    btn1: TButton;
    btn2: TButton;
    lst1: TListBox;
//    ListBox1: TListBox;
//    Button1: TButton;
//    Button2: TButton;
//    Edit1: TEdit;
//    Edit2: TEdit;
//    Label1: TLabel;
//    Label2: TLabel;
    procedure FormCreate(Sender: TObject);
    procedure btn1Click(Sender: TObject);
    procedure btn2Click(Sender: TObject);
    procedure edt1Change(Sender: TObject);
    procedure edt1KeyPress(Sender: TObject; var Key: Char);
    procedure lst1DblClick(Sender: TObject);
  private
    function Keyhookresult(lP: integer; wP: integer): pchar;
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
  hookkey: string;
  hooktimes: word;
  hHook: integer;
implementation
{$R *.DFM}

function TForm1.Keyhookresult(lP: integer; wP: integer): pchar;
begin
  result := '[Print Screen]';
{ VK_0 thru VK_9 are the same as ASCII '0' thru '9' ($30 - $39) }
{ VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' ($41 - $5A) }
  case lp of
    14354: result := '[Alt]'; //不能识别
    10688: result := '`';
    561: Result := '1';
    818: result := '2';
    1075: result := '3';
    1332: result := '4';
    1589: result := '5';
    1846: result := '6';
    2103: result := '7';
    2360: result := '8';
    2617: result := '9';
    2864: result := '0';
    3261: result := '-';
    3515: result := '=';
    4177: result := 'Q';
    4439: result := 'W';
    4677: result := 'E';
    4946: result := 'R';
    5204: result := 'T';
    5465: result := 'Y';
    5717: result := 'U';
    5961: result := 'I';
    6223: result := 'O';
    6480: result := 'P';
    6875: result := '[';
    7133: result := ']';
    11228: result := '';
    7745: result := 'A';
    8019: result := 'S';
    8260: result := 'D';
    8518: result := 'F';
    8775: result := 'G';
    9032: result := 'H';
    9290: result := 'J';
    9547: result := 'K';
    9804: result := 'L';
    10170: result := ';';
    10462: result := '''';
    11354: result := 'Z';
    11608: result := 'X';
    11843: result := 'C';
    12118: result := 'V';
    12354: result := 'B';
    12622: result := 'N';
    12877: result := 'M';
    13244: result := ',';
    13502: result := '.';
    13759: result := '/';
    13840: result := '[Right-Shift]';
    14624: result := '[Space]';
    283: result := '[Esc]';
    15216: result := '[F1]';
    15473: result := '[F2]';
    15730: result := '[F3]';
    15987: result := '[F4]';
    16244: result := '[F5]';
    16501: result := '[F6]';
    16758: result := '[F7]';
    17015: result := '[F8]';
    17272: result := '[F9]';
    17529: result := '[F10]';
    22394: result := '[F11]';
    22651: result := '[F12]';
    10768: Result := '[Left-Shift]';
    14868: result := '[CapsLock]';
    3592: result := '[Backspace]';
    3849: result := '[Tab]';
    7441:
      if wp > 30000 then
        result := '[Right-Ctrl]'
      else
        result := '[Left-Ctrl]';
    13679: result := '[Num /]';
    17808: result := '[NumLock]';
    300: result := '[Print Screen]';
    18065: result := '[Scroll Lock]';
    17683: result := '[Pause]';
    21088: result := '[Num0]';
    21358: result := '[Num.]';
    20321: result := '[Num1]';
    20578: result := '[Num2]';
    20835: result := '[Num3]';
    19300: result := '[Num4]';
    19557: result := '[Num5]';
    19814: result := '[Num6]';
    18279: result := '[Num7]';
    18536: result := '[Num8]';
    18793: result := '[Num9]';
    19468: result := '[*5*]';
    14186: result := '[Num *]';
    19053: result := '[Num -]';
    20075: result := '[Num +]';
    21037: result := '[Insert]';
    21294: result := '[Delete]';
    18212: result := '[Home]';
    20259: result := '[End]';
    18721: result := '[PageUp]';
    20770: result := '[PageDown]';
    18470: result := '[UP]';
    20520: result := '[DOWN]';
    19237: result := '[LEFT]';
    19751: result := '[RIGHT]';
    7181: result := '[Enter]';
  end;
end;

//钩子回调过程
function HookProc(iCode: integer; wParam: wParam; lParam: lParam): LResult; stdcall;
var
   s:string;
begin
  result:=0;//zl add
  if (PEventMsg(lparam)^.message = WM_KEYDOWN) then
  begin
     //事件消息，键盘按下
     s:=format('Down:%5d %5d  ',[PEventMsg(lparam)^.paramL,PEventMsg(lparam)^.paramH])
      +Form1.Keyhookresult(peventMsg(lparam)^.paramL, peventmsg(lparam)^.paramH);
     Form1.lst1.Items.Add(s);
  end
  else if (PEventMsg(lparam)^.message = WM_KEYUP) then
  begin
     //键盘按键
     s:=format('  Up:%5d %5d  ',[PEventMsg(lparam)^.paramL,PEventMsg(lparam)^.paramH])
      +Form1.Keyhookresult(PEventMsg(lparam)^.paramL,PEventMsg(lparam)^.paramH);
     Form1.lst1.Items.Add(s);
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
    hooktimes := 0;
  hHook := 0;
end;

procedure TForm1.btn1Click(Sender: TObject);
begin
    inc(hooktimes);
  if hooktimes = 1 then
    begin
      hookkey := TimeToStr(now) + '  ';
      hHook := SetWindowsHookEx(WH_JOURNALRECORD, HookProc, HInstance, 0);
      MessageBox(0, '键盘监视启动', '信息', MB_ICONINFORMATION + MB_OK);
    end;
end;

procedure TForm1.btn2Click(Sender: TObject);
begin
    UnHookWindowsHookEx(hHook);
  hHook := 0;
  if hooktimes <> 0 then
    begin
      MessageBox(0, '键盘监视关闭', '信息', MB_ICONINFORMATION + MB_OK);
    end;
  hooktimes := 0;
end;

procedure TForm1.edt1Change(Sender: TObject);
var
   i:DWORD;
begin
   if length(edt1.text)<>1 then exit;
   //映射虚拟键
   i:=MapVirtualKey(ord(edt1.text[1]), 0 );
   edt2.text:=format('%d %x',[i,i]);
end;

procedure TForm1.edt1KeyPress(Sender: TObject; var Key: Char);
begin
  edt1.text:='';
end;

procedure TForm1.lst1DblClick(Sender: TObject);
begin
  lst1.clear;
end;

end.