哪位仁兄可知Windows钩子(hook)函数如何编写可有Source Code

[jing]

[jiangtao]

pls goto www.midatech.com/jiangtao/

check the hook.zip

[ty]

试一下这个:
// mousehook.cpp : Defines the initialization routines for the DLL.
//

#include "stdafx.h"
#include <afxdllx.h>
#include "Mousehook.h"

#pragma data_seg("mydata")
HWND glhPrevTarWnd=NULL;
HWND glhDisplayWnd=NULL;
HHOOK glhHook=NULL;
HINSTANCE glhInstance=NULL;
#pragma data_seg()

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif


static AFX_EXTENSION_MODULE MousehookDLL = { NULL, NULL };

extern "C" int APIENTRY
DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
// Remove this if you use lpReserved
UNREFERENCED_PARAMETER(lpReserved);

if (dwReason == DLL_PROCESS_ATTACH)
{
TRACE0("MOUSEHOOK.DLL Initializing!\n");

// Extension DLL one-time initialization
if (!AfxInitExtensionModule(MousehookDLL, hInstance))
return 0;

// Insert this DLL into the resource chain
// NOTE: If this Extension DLL is being implicitly linked to by
// an MFC Regular DLL (such as an ActiveX Control)
// instead of an MFC application, then you will want to
// remove this line from DllMain and put it in a separate
// function exported from this Extension DLL. The Regular DLL
// that uses this Extension DLL should then explicitly call that
// function to initialize this Extension DLL. Otherwise,
// the CDynLinkLibrary object will not be attached to the
// Regular DLL's resource chain, and serious problems will
// result.

new CDynLinkLibrary(MousehookDLL);
glhInstance=hInstance;//add
}
else if (dwReason == DLL_PROCESS_DETACH)
{
TRACE0("MOUSEHOOK.DLL Terminating!\n");
// Terminate the library before destructors are called
AfxTermExtensionModule(MousehookDLL);
}
return 1; // ok
}

// add the after
Cmousehook::Cmousehook()
{
}

Cmousehook::~Cmousehook()
{
stophook();
}
LRESULT WINAPI MouseProc(int nCode,WPARAM wparam,LPARAM lparam)
{
LPMOUSEHOOKSTRUCT pMouseHook=(MOUSEHOOKSTRUCT FAR *)lparam;
if(nCode>=0)
{
HWND glhTargetWnd=pMouseHook->hwnd;
HWND ParentWnd=glhTargetWnd;
while(ParentWnd!=NULL)
{
glhTargetWnd=ParentWnd;
ParentWnd=GetParent(glhTargetWnd);
}
if(glhTargetWnd!=glhPrevTarWnd)
{
char szCaption[100];
GetWindowText(glhTargetWnd,szCaption,100);
if(IsWindow(glhDisplayWnd))
SendMessage(glhDisplayWnd,WM_SETTEXT,0,(LPARAM)(LPCTSTR)szCaption);

glhPrevTarWnd=glhTargetWnd;
}
}
return CallNextHookEx(glhHook,nCode,wparam,lparam);
}

BOOL Cmousehook::starthook(HWND hWnd)
{
BOOL bResult=FALSE;
glhHook=SetWindowsHookEx(WH_MOUSE,MouseProc,glhInstance,0);
if(glhHook!=NULL)
bResult=TRUE;
glhDisplayWnd=hWnd;
return bResult;
}

BOOL Cmousehook::stophook()
{
BOOL bResult=FALSE;
if(glhHook)
{
bResult=UnhookWindowsHookEx(glhHook);
if(bResult)
{
glhPrevTarWnd=NULL;
glhDisplayWnd=NULL;
glhHook=NULL;
}
}
return bResult;
}