如何使用HOOK来截取键盘事件?(200分)

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如何使用HOOK来截取键盘事件?
 
有专门的控件。
 
别人写的一个不用写DLL文件的示例<br>const<br>&nbsp; KeyPressMask=$80000000; &nbsp;//键盘掩码常量<br>var<br>&nbsp; MainForm: TMainForm;<br>&nbsp; g_hLogHook:HHOOK=0; //钩子变量<br>&nbsp; g_hLastFocus:HWnd=0; //记录上一次得到焦点的窗口句柄<br>&nbsp; g_TFocus:HWnd=0;<br>&nbsp; g_PrvChar:Char; //保存上一次按键值<br><br>implementation<br><br>function JournalLogProc(iCode:Integer;wParam:WPARAM;lParam:LPARAM): LRESULT stdcall;<br>var<br>&nbsp; color: TColor;<br>&nbsp; pEvt:^EVENTMSG;<br>&nbsp; hFocus, TFocus:HWND; &nbsp; &nbsp; &nbsp;//保存当前活动窗口句柄<br>&nbsp; szTitle:array[0..255]of Char; &nbsp; &nbsp; //当前窗口名称<br>&nbsp; classname : array[0..255] of Char;<br>&nbsp; szaTitle : array[0..255] of Char;<br>&nbsp; classaname : array[0..255] of Char;<br>&nbsp; vKey:Integer;<br>&nbsp; str:string;<br>&nbsp; Mouse1, Mouse2:String;<br>&nbsp; iShift:Integer;<br>&nbsp; iCapital:Integer;<br>&nbsp; iNumLock:Integer;<br>&nbsp; bShift:Boolean;<br>&nbsp; bCapital:Boolean;<br>&nbsp; bNumLock:Boolean;<br>begin<br>&nbsp; Result:=0;<br>&nbsp; if iCode&lt;0 then<br>&nbsp; &nbsp; exit;<br>&nbsp; CallNextHookEx(g_hLogHook,iCode,wParam,lParam);<br>&nbsp; if iCode=HC_ACTION then<br>&nbsp; begin<br>&nbsp; &nbsp; pEvt:=Pointer(DWord(lParam));<br>&nbsp; &nbsp; if (pEvt.message=WM_KEYDOWN) &nbsp;or (pEvt.message=WM_KEYUP) OR (pEvt.message=260) then<br>&nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; MainForm.KeyLabel1.Caption:='事  件:';<br>&nbsp; &nbsp; &nbsp; case pEvt.message of<br>&nbsp; &nbsp; &nbsp; &nbsp; WM_KEYDOWN: MainForm.KeyLabel1.Caption:='按下事件:';<br>&nbsp; &nbsp; &nbsp; &nbsp; WM_KEYUP: MainForm.KeyLabel1.Caption:='松开事件:';<br>&nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; MainForm.KeyEdit1.Clear;<br>&nbsp; &nbsp; &nbsp; MainForm.KeyEdit2.Clear;<br>&nbsp; &nbsp; &nbsp; MainForm.KeyEdit3.Clear;<br>&nbsp; &nbsp; &nbsp; vKey:=LOBYTE(pEvt.paramL); // 取得虚拟键值<br>&nbsp; &nbsp; &nbsp; hFocus:=GetActiveWindow(); //取得当前活动窗口句柄<br>&nbsp; &nbsp; &nbsp; if g_hLastFocus&lt;&gt;hFocus then //当前活动窗口是否改变<br>&nbsp; &nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; &nbsp; GetWindowText(hFocus,szTitle,256);<br>&nbsp; &nbsp; &nbsp; &nbsp; g_hLastFocus:=hFocus;<br>&nbsp; &nbsp; &nbsp; &nbsp; getClassName(hFocus,classname,256);<br>&nbsp; &nbsp; &nbsp; &nbsp; MainForm.OthEdit1.Text:='局柄:'+intTostr(hFocus)+Format(' 标题:%s',[szTitle])+Format(' 类:%s',[classname]);<br>&nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; iShift:=GetKeyState($10); //测试SHIFT,CAPTION,NUMLOCK等键是否按下<br>&nbsp; &nbsp; &nbsp; iCapital:=GetKeyState($14);<br>&nbsp; &nbsp; &nbsp; iNumLock:=GetKeyState($90);<br>&nbsp; &nbsp; &nbsp; bShift:=(iShift and KeyPressMask)=KeyPressMask;<br>&nbsp; &nbsp; &nbsp; bCapital:=(iCapital and 1)=1;<br>&nbsp; &nbsp; &nbsp; bNumLock:=(iNumLock and 1)=1;<br>&nbsp; &nbsp; &nbsp; MainForm.KeyEdit2.Text:=IntToStr(vKey);<br>&nbsp; &nbsp; &nbsp; CASE vKey OF<br>&nbsp; &nbsp; &nbsp; &nbsp; 8..46: case vKey of<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;8: str:='BackSpace';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;9: str:='TAB';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;12: str:='Clear';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;13: str:='Enter';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;16: str:='Shift';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;17: str:='Ctrl';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;18: str:='Alt';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;19: str:='Pause Break';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;20: str:='Caps Lock';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;27: str:='Esc';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;32: str:='Space';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;33: str:='Page Up';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;34: str:='Page Down';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;35: str:='End';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;36: str:='Home';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;37: str:='Left Arrow';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;38: str:='Up Arrow';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;39: str:='Right Arrow';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;40: str:='Down Arrow';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;41: str:='Select';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;42: str:='Print';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;43: str:='Execute';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;44: str:='Print Screen';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;45: str:='Insert';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;46: str:='Delete';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;47: str:='Help';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;END;<br>&nbsp; &nbsp; &nbsp; &nbsp; 48..57: if not bShift then str:=Char(vKey)// 数字0-9<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case vKey of<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 48: str:=')';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 49: str:='!';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 50: str:='@';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 51: str:='#';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 52: str:='$';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 53: str:='%';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 54: str:='^';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 55: str:='&amp;';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 56: str:='*';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 57: str:='(';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; 65..90: if not bCapital then &nbsp; &nbsp; // A-Z a-z<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if bShift then str:=Char(vKey)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else str:=Char(vKey+32);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if bShift then str:=Char(vKey+32)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else str:=Char(vKey);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; 91..93: case vKey of<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 91: str:='Left Windows';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 92: str:='Right Windows';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 93: str:='Applications';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; 96..105: if bNumLock then str:=Char(vKey-96+48);// 小键盘0-9<br>&nbsp; &nbsp; &nbsp; &nbsp; 106..111: case vKey of<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 106: str:='*';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 107: str:='+';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 108: str:='';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 109: str:='-';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 110: str:='.';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 111: str:='/';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; END;<br>&nbsp; &nbsp; &nbsp; &nbsp; 112..135: case vKey of &nbsp; // 功能键 &nbsp; [F1]-[F12]<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 112: str:='F1';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 113: str:='F2';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 114: str:='F3';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 115: str:='F4';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 116: str:='F5';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 117: str:='F6';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 118: str:='F7';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 119: str:='F8';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 120: str:='F9';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 121: str:='F10';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 122: str:='F11';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 123: str:='F12';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 124: str:='F13';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 125: str:='F14';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 126: str:='F15';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 127: str:='F16';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 128: str:='F17';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 129: str:='F18';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 130: str:='F19';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 131: str:='F20';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 132: str:='F21';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 133: str:='F22';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 134: str:='F23';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 135: str:='F24';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; 144..165: case vKey of<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 144: str:='Num Lock';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 145: str:='Scroll Lock';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 160: str:='Left Shift';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 161: str:='Right Shift';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 162: str:='Left Ctrl';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 163: str:='Right Ctrl';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 164: str:='Left Alt';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 165: str:='Right Alt';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end; &nbsp; <br>&nbsp; &nbsp; &nbsp; &nbsp; 186..222: case vKey of &nbsp;// 其他键<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 186: if not bShift then str:=';' else str:=':';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 187: if not bShift then str:='=' else str:='+';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 188: if not bShift then str:=',' else str:='&lt;';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 189: if not bShift then str:='-' else str:='_';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 190: if not bShift then str:='.' else str:='&gt;';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 191: if not bShift then str:='/' else str:='?';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 192: if not bShift then str:='`' else str:='~';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 219: if not bShift then str:='[' else str:='{';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 220: if not bShift then str:='/' else str:='|';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 221: if not bShift then str:=']' else str:='}';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 222: if not bShift then str:=char(39) else str:='"';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; END;<br>&nbsp; &nbsp; &nbsp; &nbsp; 229..254: case vKey of<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 229: str:='Process';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 246: str:='Attn';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 247: str:='CrSel';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 248: str:='ExSel';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 249: str:='Erase EOF';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 250: str:='Play';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 251: str:='Zoom';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 252: str:='Reserved for future use';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 253: str:='PA1';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 254: str:='Clear';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; else str:='';<br>&nbsp; &nbsp; &nbsp; END;<br>&nbsp; &nbsp; &nbsp; MainForm.KeyEdit1.Text:=str;<br>&nbsp; &nbsp; &nbsp; if g_PrvChar&lt;&gt;Char(vKey) then g_PrvChar:=Char(vKey);<br>&nbsp; &nbsp; end<br>&nbsp; &nbsp; else<br>&nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; case pEvt.message of<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_MOUSEWHEEL: BEGIN<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Mouse2:='WM_MOUSEWHEEL';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Mouse1:='鼠标滚轮滚动';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;END;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_MOUSEMOVE: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MainForm.OthEdit3.Text:=Format('X:%d, Y:%d',[pEvt.paramL,pEvt.paramH]);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; color:=GetPixel(getdc(0),pEvt.paramL,pEvt.paramH);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MainForm.OthEdit4.Color:=color;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MainForm.OthEdit4.Font.Color:=TColor(ColorToRGB(Color) xor $ffffff);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MainForm.OthEdit4.Text:='R='+inttostr(color and $FF) +<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ' G='+inttostr(hi(color and $FF00)) +<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ' B='+inttostr(hiword(color and $FF0000)) +<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ' HEX='+inttohex(color, 6);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_LBUTTONDOWN: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse2:='WM_LBUTTONDOWN';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse1:='按下鼠标左键';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_LBUTTONUP: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse2:='WM_LBUTTONUP';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse1:='释放鼠标左键';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_LBUTTONDBLCLK: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse2:='WM_LBUTTONDBLCLK';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse1:='双击鼠标左键';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_RBUTTONDOWN: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse2:='WM_RBUTTONDOWN';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse1:='按下鼠标右键';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_RBUTTONUP: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse2:='WM_RBUTTONUP';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse1:='释放鼠标右键';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_RBUTTONDBLCLK: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse2:='WM_RBUTTONDBLCLK';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse1:='双击鼠标右键';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_MBUTTONDOWN: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse2:='WM_MBUTTONDOWN';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse1:='按下鼠标中键';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_MBUTTONUP: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse2:='WM_MBUTTONUP';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse1:='释放鼠标中键';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; WM_MBUTTONDBLCLK: begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse2:='WM_MBUTTONDBLCLK';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Mouse1:='双击鼠标中键';<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; &nbsp; if (Mouse1&lt;&gt;'') and (Mouse2&lt;&gt;'') then<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MainForm.MouseEdit2.Text:=Mouse2;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MainForm.MouseEdit1.Text:=Mouse1;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; end;<br>&nbsp; end;<br>&nbsp; Result:=CallNextHookEx(g_hLogHook,iCode,wParam,lParam);<br>end;<br><br>//使用:<br>procedure TMainForm.KeyCapButClick(Sender: TObject);<br>begin<br>&nbsp; OthBox.SetFocus;<br>&nbsp; if KeyCapBut.Caption='开始捕获' then<br>&nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; if (g_hLogHook=0) then<br>&nbsp; &nbsp; &nbsp; &nbsp; g_hLogHook:=SetWindowsHookEx(WH_JOURNALRECORD, JournalLogProc,HInstance,0);<br>&nbsp; &nbsp; &nbsp; KeyCapBut.Caption:='停止捕获';<br>&nbsp; &nbsp; end<br>&nbsp; else<br>&nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; if (g_hLogHook&lt;&gt;0) then<br>&nbsp; &nbsp; &nbsp; &nbsp; begin<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; UnhookWindowsHookEx(g_hLogHook);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; g_hLogHook:=0;<br>&nbsp; &nbsp; &nbsp; &nbsp; end;<br>&nbsp; &nbsp; &nbsp; KeyCapBut.Caption:='开始捕获';<br>&nbsp; &nbsp; end;<br>end;
 
接受答案了.
 
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