ICopyHook接口就行了啊,DLL编译出来后,需要在注册表里添加指定的项以便EXPLORER加载它,具体位置参见一下MSDN,大概是这个
HKEY_CLASSES_ROOT
Directory
Shellex
CopyHookHandlers
your_copyhook
(Default)
= {copyhook CLSID value}
如果不能实时生效,重启一下EXPLORER就好,一般建议在虚拟机里调试,省得各种崩溃麻烦
ICopyHook是一个用于创建拷贝钩子处理程序COM接口,它决定一个文件夹或者打印机对象是否可以被移动,拷贝,重命名或删除。Shell在执行这些 *** 作之前,会调用ICopyHook接口的CopyCallback方法对它们进行验证。CopyCallback返回一个int值指示Shell是否应该继续执行这个 *** 作。返回值IDYES表示继续,而返回值IDNO和IDCANCEL则表示终止。【文章来自:开店乐KaiDianLe.Com】最好的网上开店系统:凡人网络购物系统V8.0 网上开店助手 不懂技术怎么建网上商城 网上开店两步搞定一个文件夹对象可以安装多个拷贝钩子处理程序。如果出现这种情况,Shell会依次调用每个处理程序。只有当每个处理程序都返回IDYES时,Shell才真正执行用户请求的 *** 作。
拷贝钩子处理程序的作用是在上述四种 *** 作执行前对它们进行验证,但是Shell并不会把 *** 作的结果通知给拷贝钩子处理程序。而windows提供的API函数FindFirstChangeNotification和FindNextChangeNotification却可以实现这个功能。因此,只有把这种两种方法结合起来,才能对一个文件夹的状态进行完全的监控。
拷贝钩子处理程序实现并不困难,首先创建一个作为进程内组件的COM对象,它只需要暴露一个ICopyHook接口(当然还有IUnknown)。然后用regsrv32.exe注册这个COM组件。最后一步是向Shell注册你的这个拷贝钩子处理程序,方法是在注册表HKEY_CLASSES_ROOT\Directory\Shellex\CopyHookHandlers下创建一个名称任意的sub key,在此sub key中创建一个类型为REG_SZ的项并将你的COM对象的CLSID作为它的默认值就可以了。
下面就是一个拷贝钩子的实现程序
// CCopyHook.h
//CCopyHook类实现了ICopyHook接口,CClassFactory实现了IClassFactory接口
#include <shlobj.h>
class CCopyHook: public ICopyHook
{
public:
CCopyHook():m_refcnt(0) { }
STDMETHODIMP QueryInterface(REFIID iid,void** ppvObject)
STDMETHODIMP_(ULONG) AddRef()
STDMETHODIMP_(ULONG) Release()
STDMETHODIMP_(UINT) CopyCallback(HWND hwnd,UINT wFunc,UINT wFlags,
LPCTSTR pszSrcFile,DWORD dwSrcAttribs,
LPCTSTR pszDestFile,DWORD dwDestAttribs)
private:
int m_refcnt
}
class CClassFactory:public IClassFactory
{
public:
CClassFactory():m_refcnt(0) { }
STDMETHODIMP QueryInterface(REFIID iid,void** ppvObject)
STDMETHODIMP_(ULONG) AddRef()
STDMETHODIMP_(ULONG) Release()
STDMETHODIMP CreateInstance(IUnknown * pUnkOuter,REFIID riid,void ** ppvObject)
STDMETHODIMP LockServer(BOOL fLock)
private:
int m_refcnt
}
// CCopyHook.cpp
//CCopyHook对象和CClassFactory对象的实现文件
#include <stdio.h>
#include "CCopyHook.h"
extern LONG nLocks //对象计数,用于DllCanUnloadNow
ULONG __stdcall CCopyHook::AddRef(){
if(m_refcnt==0)
nLocks++
m_refcnt++
return m_refcnt
}
ULONG __stdcall CCopyHook::Release(){
int nNewCnt=--m_refcnt
if(nNewCnt<=0){
nLocks--
delete this
}
return nNewCnt
}
HRESULT __stdcall CCopyHook::QueryInterface(REFIID iid,void** ppvObject){
if(iid==IID_IUnknown)
*ppvObject=static_cast<IUnknown*>(this)
else
if(iid==IID_IShellCopyHook)
*ppvObject=static_cast<ICopyHook*>(this)
else
return E_NOINTERFACE
reinterpret_cast<IUnknown*>(*ppvObject)->AddRef()
return S_OK
}
//这就是CopyCallback方法,拷贝钩子的所有功能由它实现。参数的具体值参看MSDN
UINT __stdcall CCopyHook::CopyCallback(HWND hwnd,UINT wFunc,UINT wFlags,
LPCTSTR pszSrcFile,DWORD dwSrcAttribs,
LPCTSTR pszDestFile,DWORD dwDestAttribs){
char szMessage[MAX_PATH+14]
sprintf(szMessage,"对%s进行的 *** 作,是否继续?",pszSrcFile)
return MessageBox(NULL,szMessage,"确认",MB_YESNO|MB_ICONEXCLAMATION)
}
ULONG __stdcall CClassFactory::AddRef(){
if(m_refcnt==0)
nLocks++
m_refcnt++
return m_refcnt
}
ULONG __stdcall CClassFactory::Release(){
int nNewCnt=--m_refcnt
if(nNewCnt<=0){
nLocks--
delete this
}
return nNewCnt
}
HRESULT __stdcall CClassFactory::QueryInterface(REFIID iid,void** ppvObject){
if(iid==IID_IUnknown)
*ppvObject=static_cast<IUnknown*>(this)
else
if(iid==IID_IClassFactory)
*ppvObject=static_cast<IClassFactory*>(this)
else
return E_NOINTERFACE
reinterpret_cast<IUnknown*>(*ppvObject)->AddRef()
return S_OK
}
HRESULT __stdcall CClassFactory::CreateInstance(IUnknown* pUnkownOuter,REFIID riid,void** ppvObj){
if(pUnkownOuter!=NULL)
return CLASS_E_NOAGGREGATION
CCopyHook* pObj=new CCopyHook
pObj->AddRef()
HRESULT hr=pObj->QueryInterface(riid,ppvObj)
pObj->Release()
return hr
}
HRESULT __stdcall CClassFactory::LockServer(BOOL fLock){
if(fLock)
nLocks++
else
nLocks--
return S_OK
}
// main.cpp
//主要实现了几个COM对象标准的导出函数。
#include <objbase.h>
#include <olectl.h>
#include "CCopyHook.h"
//这是要添加到注册表中的项,注意如果你要使用这段代码,应该用UUIDGEN.exe生成一
//个新的CLSID。
const char* szRegTable[][3]={
{"CLSID\\{7e10a039-fe03-4f9c-b7e1-c5eeeaf53735}",0,"CopyHook"},
{"CLSID\\{7e10a039-fe03-4f9c-b7e1-c5eeeaf53735}\\InProcServer32",0,(const char*)-1},
{"CLSID\\{7e10a039-fe03-4f9c-b7e1-c5eeeaf53735}\\InProcServer32","ThreadingModel","Apartment"},
{"CLSID\\{7e10a039-fe03-4f9c-b7e1-c5eeeaf53735}\\ProgID",0,"webber84.CopyHook.1"},
{"webber84.CopyHook.1",0,"CopyHook"},
{"webber84.CopyHook.1\\CLSID",0,"{7e10a039-fe03-4f9c-b7e1-c5eeeaf53735}"}}
HMODULE hInstance=NULL
LONG nLocks=0
BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
){
if(ul_reason_for_call==DLL_PROCESS_ATTACH)
hInstance=(HMODULE)hModule
return TRUE
}
STDAPI DllUnregisterServer(){
HRESULT hr=S_OKLONG ret=0
int items=sizeof(szRegTable)/sizeof(szRegTable[0])
for(int i=items-1i>=0i--){
const char* szKeyName=szRegTable[i][0]
if( (i==items-1) || stricmp(szRegTable[i+1][0],szKeyName)!=0)
ret=RegDeleteKey(HKEY_CLASSES_ROOT,szKeyName)
if(ret!=ERROR_SUCCESS)
hr=SELFREG_E_CLASS
}
return hr
}
//可重用的DllRegisterServer函数,只要照上面的格式把注册表项放到一个数组中,就可以//用这段代码完成对任意组件的注册。
STDAPI DllRegisterServer(void){
HRESULT hr=S_OK
int items=sizeof(szRegTable)/sizeof(szRegTable[0])
char szDllPath[MAX_PATH]
GetModuleFileName(hInstance,szDllPath,MAX_PATH)
for(int i=0i<items &&SUCCEEDED(hr)i++){
const char* szKeyName=szRegTable[i][0]
const char* szValueName=szRegTable[i][1]
const char* szValue=szRegTable[i][2]
if(szValue==(const char*)-1)
szValue=szDllPath
HKEY hKey
LONG ret=RegCreateKey(HKEY_CLASSES_ROOT,szKeyName,&hKey)
if(ret==ERROR_SUCCESS){
RegSetValueEx(hKey,szValueName,0,REG_SZ,(const BYTE*)szValue,
strlen(szValue)+1)
RegCloseKey(hKey)
}
if(ret!=ERROR_SUCCESS){
hr=SELFREG_E_CLASS
DllUnregisterServer()
}
}
return hr
}
STDAPI DllGetClassObject (REFCLSID rclsid, REFIID riid, void** ppvObj) {
HRESULT hr = E_OUTOFMEMORY
*ppvObj = NULL
CClassFactory *pClassFactory = new CClassFactory
if (pClassFactory != NULL)
hr = pClassFactory->QueryInterface(riid, ppvObj)
return hr
}
STDAPI DllCanUnloadNow(){
return nLocks==0 ? S_OK : S_FALSE
}
COM接口,它决定一个文件夹或者打印机对象是否可以被移动,拷贝,重命名或删除。Shell在执行这些 *** 作之前,会调用ICopyHook接口的CopyCallback方法对它们进行验证。CopyCallback返回一个int值指示Shell是否应该继续执行这个 *** 作。返回值IDYES表示继续,而返回值IDNO和IDCANCEL则表示终止。最好的网上开店系统:凡人网络购物系统V8.0 网上开店助手 不懂技术怎么建网上商城 网上开店两步搞定一个文件夹对象可以安装多个拷贝钩子处理程序。如果出现这种情况,Shell会依次调用每个处理程序。只有当每个处理程序都返回IDYES时,Shell才真正执行用户请求的 *** 作。
拷贝钩子处理程序的作用是在上述四种 *** 作执行前对它们进行验证,但是Shell并不会把 *** 作的结果通知给拷贝钩子处理程序。而windows提供的API函数FindFirstChangeNotification和FindNextChangeNotification却可以实现这个功能。因此,只有把这种两种方法结合起来,才能对一个文件夹的状态进行完全的监控。
拷贝钩子处理程序实现并不困难,首先创建一个作为进程内组件的COM对象,它只需要暴露一个ICopyHook接口(当然还有IUnknown)。然后用regsrv32.exe注册这个COM组件。最后一步是向Shell注册你的这个拷贝钩子处理程序,方法是在注册表HKEY_CLASSES_ROOT\Directory\Shellex\CopyHookHandlers下创建一个名称任意的sub key,在此sub key中创建一个类型为REG_SZ的项并将你的COM对象的CLSID作为它的默认值就可以了。
下面就是一个拷贝钩子的实现程序
// CCopyHook.h
//CCopyHook类实现了ICopyHook接口,CClassFactory实现了IClassFactory接口
#include <shlobj.h>
class CCopyHook: public ICopyHook
{
public:
CCopyHook():m_refcnt(0)
STDMETHODIMP QueryInterface(REFIID iid,void** ppvObject)
STDMETHODIMP_(ULONG) AddRef()
STDMETHODIMP_(ULONG) Release()
STDMETHODIMP_(UINT) CopyCallback(HWND hwnd,UINT wFunc,UINT wFlags,
LPCTSTR pszSrcFile,DWORD dwSrcAttribs,
LPCTSTR pszDestFile,DWORD dwDestAttribs)
private:
int m_refcnt
}
class CClassFactory:public IClassFactory
{
public:
CClassFactory():m_refcnt(0)
STDMETHODIMP QueryInterface(REFIID iid,void** ppvObject)
STDMETHODIMP_(ULONG) AddRef()
STDMETHODIMP_(ULONG) Release()
STDMETHODIMP CreateInstance(IUnknown * pUnkOuter,REFIID riid,void ** ppvObject)
STDMETHODIMP LockServer(BOOL fLock)
private:
int m_refcnt
}
// CCopyHook.cpp
//CCopyHook对象和CClassFactory对象的实现文件
#include <stdio.h>
#include "CCopyHook.h"
extern LONG nLocks //对象计数,用于DllCanUnloadNow
ULONG __stdcall CCopyHook::AddRef(){
if(m_refcnt==0)
nLocks++
m_refcnt++
return m_refcnt
}
ULONG __stdcall CCopyHook::Release(){
int nNewCnt=--m_refcnt
if(nNewCnt<=0){
nLocks--
delete this
}
return nNewCnt
}
HRESULT __stdcall CCopyHook::QueryInterface(REFIID iid,void** ppvObject){
if(iid==IID_IUnknown)
*ppvObject=static_cast<IUnknown*>(this)
else
if(iid==IID_IShellCopyHook)
*ppvObject=static_cast<ICopyHook*>(this)
else
return E_NOINTERFACE
reinterpret_cast<IUnknown*>(*ppvObject)->AddRef()
return S_OK
}
//这就是CopyCallback方法,拷贝钩子的所有功能由它实现。参数的具体值参看MSDN
UINT __stdcall CCopyHook::CopyCallback(HWND hwnd,UINT wFunc,UINT wFlags,
LPCTSTR pszSrcFile,DWORD dwSrcAttribs,
LPCTSTR pszDestFile,DWORD dwDestAttribs){
char szMessage[MAX_PATH+14]
sprintf(szMessage,"对%s进行的 *** 作,是否继续?",pszSrcFile)
return MessageBox(NULL,szMessage,"确认",MB_YESNO|MB_ICONEXCLAMATION)
}
ULONG __stdcall CClassFactory::AddRef(){
if(m_refcnt==0)
nLocks++
m_refcnt++
return m_refcnt
}
ULONG __stdcall CClassFactory::Release(){
int nNewCnt=--m_refcnt
if(nNewCnt<=0){
nLocks--
delete this
}
return nNewCnt
}
HRESULT __stdcall CClassFactory::QueryInterface(REFIID iid,void** ppvObject){
if(iid==IID_IUnknown)
*ppvObject=static_cast<IUnknown*>(this)
else
if(iid==IID_IClassFactory)
*ppvObject=static_cast<IClassFactory*>(this)
else
return E_NOINTERFACE
reinterpret_cast<IUnknown*>(*ppvObject)->AddRef()
return S_OK
}
HRESULT __stdcall CClassFactory::CreateInstance(IUnknown* pUnkownOuter,REFIID riid,void** ppvObj){
if(pUnkownOuter!=NULL)
return CLASS_E_NOAGGREGATION
CCopyHook* pObj=new CCopyHook
pObj->AddRef()
HRESULT hr=pObj->QueryInterface(riid,ppvObj)
pObj->Release()
return hr
}
HRESULT __stdcall CClassFactory::LockServer(BOOL fLock){
if(fLock)
nLocks++
else
nLocks--
return S_OK
}
// main.cpp
//主要实现了几个COM对象标准的导出函数。
#include <objbase.h>
#include <olectl.h>
#include "CCopyHook.h"
//这是要添加到注册表中的项,注意如果你要使用这段代码,应该用UUIDGEN.exe生成一
//个新的CLSID。
const char* szRegTable[][3]={
",0,"CopyHook"},
\\InProcServer32",0,(const char*)-1},
\\InProcServer32","ThreadingModel","Apartment"},
\\ProgID",0,"webber84.CopyHook.1"},
,
"}}
HMODULE hInstance=NULL
LONG nLocks=0
BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
){
if(ul_reason_for_call==DLL_PROCESS_ATTACH)
hInstance=(HMODULE)hModule
return TRUE
}
STDAPI DllUnregisterServer(){
HRESULT hr=S_OKLONG ret=0
int items=sizeof(szRegTable)/sizeof(szRegTable[0])
for(int i=items-1i>=0i--){
const char* szKeyName=szRegTable[i][0]
if( (i==items-1) || stricmp(szRegTable[i+1][0],szKeyName)!=0)
ret=RegDeleteKey(HKEY_CLASSES_ROOT,szKeyName)
if(ret!=ERROR_SUCCESS)
hr=SELFREG_E_CLASS
}
return hr
}
//可重用的DllRegisterServer函数,只要照上面的格式把注册表项放到一个数组中,就可以//用这段代码完成对任意组件的注册。
STDAPI DllRegisterServer(void){
HRESULT hr=S_OK
int items=sizeof(szRegTable)/sizeof(szRegTable[0])
char szDllPath[MAX_PATH]
GetModuleFileName(hInstance,szDllPath,MAX_PATH)
for(int i=0i<items &&SUCCEEDED(hr)i++){
const char* szKeyName=szRegTable[i][0]
const char* szValueName=szRegTable[i][1]
const char* szValue=szRegTable[i][2]
if(szValue==(const char*)-1)
szValue=szDllPath
HKEY hKey
LONG ret=RegCreateKey(HKEY_CLASSES_ROOT,szKeyName,&hKey)
if(ret==ERROR_SUCCESS){
RegSetValueEx(hKey,szValueName,0,REG_SZ,(const BYTE*)szValue,
strlen(szValue)+1)
RegCloseKey(hKey)
}
if(ret!=ERROR_SUCCESS){
hr=SELFREG_E_CLASS
DllUnregisterServer()
}
}
return hr
}
STDAPI DllGetClassObject (REFCLSID rclsid, REFIID riid, void** ppvObj) {
HRESULT hr = E_OUTOFMEMORY
*ppvObj = NULL
CClassFactory *pClassFactory = new CClassFactory
if (pClassFactory != NULL)
hr = pClassFactory->QueryInterface(riid, ppvObj)
return hr
}
STDAPI DllCanUnloadNow(){
return nLocks==0 ? S_OK : S_FALSE
}
欢迎分享,转载请注明来源:内存溢出
评论列表(0条)