不用DLL即可Hook得到按键代码（支持XP）

不用DLL即可Hook得到按键代码（支持XP）

unit Main;

interface

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

type
TMainForm = class(TForm)
RMemo: TMemo;
HookButton: TButton;
procedure HookButtonClick(Sender: TObject);
private
function Keyhookresult(lP: integer; wP: integer): pchar; { Private declarations }
public
procedure KeyOn;
procedure KeyOff;{ Public declarations }
end;

var
MainForm: TMainForm;
HookKey: string;
hHook: integer;

implementation

{$R *.dfm}

//*****************键盘检测函数******************Start
function TMainForm.Keyhookresult(lP: integer; wP: integer): pchar;
begin
result := '[FS]';
case lp of
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;

function HookProc(iCode: integer; wParam: wParam; lParam: lParam): LResult; stdcall;
begin
if (peventmsg(lparam)^.message = WM_KEYup) then
hookkey := MainForm.Keyhookresult(peventMsg(lparam)^.paramL, peventmsg(lparam)^.paramH);
if Length(hookkey) >= 1 then
begin
MainForm.RMemo.SelText:=HookKey;
hookkey := '';
end;
end;
//*****************键盘检测函数******************End

//*****************键盘检测控制******************Start
procedure TMainForm.KeyOn;//打开键盘检测
begin
if hHook =0 then
begin
hookkey := '';
hHook := SetWindowsHookEx(WH_JOURNALRECORD, HookProc, HInstance, 0);
RMemo.SelText :=#13+'[F]:';
end
else
exit;
end;

procedure TMainForm.KeyOff;//关闭键盘检测
begin
UnHookWindowsHookEx(hHook);
hHook:=0;
end;
//*****************键盘检测控制******************End
procedure TMainForm.HookButtonClick(Sender: TObject);
begin
KeyOn;
end;

end.