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| 关键词： nbsp FileMapHandle procedure HookStop HookBegin HandleDll begin then Hookkey end |
先创建内存共享，再安装Dll钩子，挂钩在Keyboard上，这样可以记录所有程序的键盘事件，看代码吧，首先是应用程序的：unit Hookkey;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;const WM_HOOKKEY = WM_USER + $1000; //用户自定义消息 HookDll = 'Key.dll'; //dll文件名type THookProcedure = procedure;stdcall; TForm1 = class(TForm) Memo1: TMemo; Button1: TButton; Button2: TButton; procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); private { Private declarations } FileMapHandle : THandle; PMem :^Integer; HandleDll : Thandle; HookBegin,HookStop : THookProcedure; procedure HookKey(var message:TMessage); Message WM_HOOKKEY; public { Public declarations } end;var Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);begin Memo1.Clear; HandleDll := LoadLibrary( PChar(ExtractFilePath(Application.ExeName) + HookDll)); //载入钩子dll if HandleDll = 0 then Raise Exception.Create('未发现钩子DLL文件'); @HookBegin := GetProcAddress(HandleDll,'HookBegin'); @HookStop := GetProcAddress(HandleDll,'HookStop'); if not Assigned(HookBegin) or not Assigned(HookStop) then Raise Exception.Create('在给定的Dll中'+#13+'未发现所需函数'); FileMapHandle := CreateFileMapping($FFFFFFFF,nil,PAGE_READWRITE,0,SizeOf(Integer),'TestHook'); //创建内存共享 if FileMapHandle = 0 then Raise Exception.Create('创建内存映射失败'); PMem := MapViewOfFile(FileMapHandle,FILE_MAP_WRITE,0,0,0); //映射到本进程 PMem^ := Handle; HookBegin; //开始挂钩end;procedure TForm1.Button2Click(Sender: TObject);begin if Assigned(HookStop) then HookStop; if HandleDll <> 0 then FreeLibrary(HandleDll); //释放Dll if FileMapHandle <> 0 then begin UnMapViewOfFile(PMem); //关闭映射 CloseHandle(FileMapHandle); //关闭共享 end;end;procedure TForm1.HookKey(var Message : TMessage);var KeyName : array [0..100] of Char; Action : String;begin GetKeyNameText(Message.LParam,@KeyName,100); if ((Message.LParam shr 31) and 1) = 1 then Action := 'KeyUp' else if ((Message.LParam shr 30) and 1) =1 then Action := 'ReKeyDown' else Action := 'KeyDown'; Memo1.Lines.Add(Action + ':' + String(KeyName));end;end.再看Dll的：unit hookkeydll;interface uses windows,messages;const WM_HOOKKEY = WM_USER + $1000; Procedure HookBegin; stdcall; Procedure HookStop; stdcall;implementation var HookDe : HHook; FileMapHandle : THandle; PViewInteger : ^Integer;function CallBackDelHook(Code : Integer; wParam : WPARAM; lParam : LPARAM) : LRESULT; stdcall;begin if code = HC_ACTION then begin FileMapHandle := OpenFileMapping(FILE_MAP_READ,False,'TestHook'); if FileMapHandle <> 0 then begin PViewInteger := MapViewOfFile(FileMapHandle,FILE_MAP_READ,0,0,0); PostMessage(PViewInteger^,WM_HOOKKEY,wParam,lParam); UnMapViewOfFile(PViewInteger); CloseHandle(FileMapHandle); end; end; Result := CallNextHookEx(HookDe,Code,wParam,lParam)end;procedure HookBegin;stdcall; begin HookDe := SetWindowsHookEx(WH_KEYBOARD,CallBackDelHook,HInstance,0); end;procedure HookStop;stdcall; begin UnHookWindowsHookEx(HookDe); end;end.Dll的工程文件;Library Key;uses SysUtils, windows, classes, messages, hookkeydll in 'hookkeydll.pas';{$R *.res}exportsHookBegin,HookStop;beginend.效果如图：以上代码均为本人一句一句敲写，并在Delphi7，windowsxp下调试通过，转载请注明出处。 |
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