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liudonghui
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附源程序如下：<br>library mousedll;<br><br>uses<br> SysUtils,<br> Classes,<br> Unitrep in 'Unitrep.pas' {Form1};<br>exports<br>HookUpMouse,<br>UnHookMouse,<br>MouseProc;<br><br>{$R *.RES}<br><br>begin<br>end.<br><br>unit Unitrep;<br><br>interface<br><br>uses<br> Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,<br> StdCtrls;<br><br>type<br> TForm1 = class(TForm)<br> Label1: TLabel;<br> Label2: TLabel;<br> Label3: TLabel;<br> Label4: TLabel;<br> Label5: TLabel;<br> Label6: TLabel;<br> Edit1: TEdit;<br> Edit2: TEdit;<br> private<br> { Private declarations }<br> public<br> { Public declarations }<br> end;<br> function HookUpMouse:THandle;export;<br> function UnHookMouse:Uint;export;<br> function MouseProc(Code: Integer; wParam: WPARAM; lParam: LPARAM):LRESULT;export; <br>var<br> Form1: TForm1;<br> hMNextHook:hHook;<br> MouseHasHookUp:Boolean;<br>implementation<br><br><br>{$R *.DFM}<br><br><br><br>function HookUpMouse:THandle;<br>var<br> hinst:Thandle;<br> proc:tfarproc;<br>begin<br> {动态连接库的application指：调用动态连接库的主程序}<br> form1:=tform1.create(application);<br> form1.show;<br> Result:=0;<br> if MouseHasHookUp then Exit;<br> hinst:=LoadLibrary(LPCTSTR('mousedll'));<br> form1.edit2.text:=inttostr(hinst);<br> proc:=getProcAddress(hinst,'MouseProc');<br> hMNextHook:=SetWindowsHookExW(WH_MOUSE,proc,hinst,0);<br> if hMNextHook<>0 then MouseHasHookUp:=True<br>end;<br><br>function UnHookMouse:Uint;<br>begin<br> Result:=0;<br> if not MouseHasHookUp then Exit;<br> if hMNextHook<>0 then<br> if UnHookWindowsHookEx(hMNextHook) then<br> begin<br> hMnextHook:=0;<br> MouseHasHookUp:=False;<br> end;<br>end;<br><br>function MouseProc(Code:Integer;wParam:WPARAM;lParam:LPARAM):LRESULT;export;<br>var<br> p:^TMouseHookStruct;<br>begin<br> form1.edit1.text:=inttostr(wparam);<br> if Code<0 then<br> begin<br> Result:=CallNextHookEx(hMNextHook,Code,wParam,lParam);<br> Exit;<br> end;<br> if wParam=WM_MOUSEMOVE then<br> begin<br> Form1.Caption := Form1.Caption + '1';<br> form1.label1.caption:='wParam='+intTostr(wparam);<br> form1.label2.caption:='lParam='+intTostr(lparam);<br> p:=ptr(lparam);<br> form1.label3.caption:='pt.x='+intTostr(p^.pt.x)+' pt.y='+intTostr(p^.pt.y);<br> end;<br> Result := 0;<br>end;<br><br>end.