ActiveX学习笔记二 ActiveX在IE中安全级别问题-实现IObjectSafety接口

http://blog.csdn.net/freedomqx/article/details/4955512

使用MFC开发ActiveX控件，在IE中会提示安全问题，这个可以通过实现IObjectSafety接口来解决问题

1.首先要包含头文件#include <ObjSafe.h>

2.然后在你的ActiveX头文件中添加

DECLARE_INTERFACE_MAP()

BEGIN_INTERFACE_PART(ObjSafe, IObjectSafety)   

STDMETHOD_(HRESULT,   GetInterfaceSafetyOptions)   (
/*   [in]   */   REFIID   riid,
/*   [out]   */   DWORD   __RPC_FAR   *pdwSupportedOptions,
/*   [out]   */   DWORD   __RPC_FAR   *pdwEnabledOptions
);   

STDMETHOD_(HRESULT,   SetInterfaceSafetyOptions)   (
/*   [in]   */   REFIID   riid,
/*   [in]   */   DWORD   dwOptionSetMask,
/*   [in]   */   DWORD   dwEnabledOptions
);   

END_INTERFACE_PART(ObjSafe); 

3.然后在ActiveX对应的cpp文件中添加，将其中MyActiveCtrl替换成自己的ActiveCtrl类

//接口映射
BEGIN_INTERFACE_MAP(MyActiveXCtrl,COleControl)
 INTERFACE_PART(MyActiveXCtrl,IID_IObjectSafety,ObjSafe)
END_INTERFACE_MAP()   

//   IObjectSafety   member   functions
//   Delegate   AddRef,   Release,   QueryInterface
ULONG FAR EXPORT MyActiveXCtrl::XObjSafe::AddRef()
{
 METHOD_PROLOGUE(MyActiveXCtrl,ObjSafe)
 return pThis->ExternalAddRef();
}   

ULONG FAR EXPORT MyActiveXCtrl::XObjSafe::Release()
{
 METHOD_PROLOGUE(MyActiveXCtrl,ObjSafe)
 return pThis->ExternalRelease();
}   

HRESULT FAR EXPORT MyActiveXCtrl::XObjSafe::QueryInterface(REFIID iid,void FAR* FAR* ppvObj)
{
 METHOD_PROLOGUE(MyActiveXCtrl,ObjSafe)
 return (HRESULT)pThis->ExternalQueryInterface(&iid,ppvObj);
}   

const DWORD dwSupportedBits = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
const DWORD dwNotSupportedBits=~dwSupportedBits;   

//   CStopLiteCtrl::XObjSafe::GetInterfaceSafetyOptions
//   Allows   container   to   query   what   interfaces   are   safe   for   what.   We're
//   optimizing   significantly   by   ignoring   which   interface   the   caller   is
//   asking   for.
HRESULT   STDMETHODCALLTYPE
MyActiveXCtrl::XObjSafe::GetInterfaceSafetyOptions(
 /*   [in]   */   REFIID   riid,
 /*   [out]   */   DWORD   __RPC_FAR   *pdwSupportedOptions,
 /*   [out]   */   DWORD   __RPC_FAR   *pdwEnabledOptions)
{
 METHOD_PROLOGUE(MyActiveXCtrl,ObjSafe)
 HRESULT   retval   =   ResultFromScode(S_OK);
 //   does   interface   exist?
 IUnknown FAR* punkInterface;
 retval = pThis->ExternalQueryInterface(&riid, (void **)&punkInterface);
 if(retval!=E_NOINTERFACE)
 { //   interface   exists
  punkInterface->Release();   //   release   it--just   checking!
 }
 //   we   support   both   kinds   of   safety   and   have   always   both   set, regardless   of   interface
 *pdwSupportedOptions=*pdwEnabledOptions=dwSupportedBits;
 return retval;   //   E_NOINTERFACE   if   QI   failed
}   

/////////////////////////////////////////////////////////////////////////////
//   CStopLiteCtrl::XObjSafe::SetInterfaceSafetyOptions
//   Since   we're   always   safe,   this   is   a   no-brainer--but   we   do   check   to   make
//   sure   the   interface   requested   exists   and   that   the   options   we're   asked   to
//   set   exist   and   are   set   on   (we   don't   support   unsafe   mode).
HRESULT   STDMETHODCALLTYPE
MyActiveXCtrl::XObjSafe::SetInterfaceSafetyOptions(
 /*   [in]   */   REFIID   riid,
 /*   [in]   */   DWORD   dwOptionSetMask,
 /*   [in]   */   DWORD   dwEnabledOptions)
{
 METHOD_PROLOGUE(MyActiveXCtrl,   ObjSafe)
 //   does   interface   exist?
 IUnknown   FAR*   punkInterface;
 pThis->ExternalQueryInterface(&riid,   (void   *   *)&punkInterface);
 if(punkInterface)
 { //   interface   exists
  punkInterface->Release();   //   release   it--just   checking!
 }
 else
 {   //   interface   doesn't   exist
  return ResultFromScode(E_NOINTERFACE);
 }   

 //   can't   set   bits   we   don't   support
 if(dwOptionSetMask   &   dwNotSupportedBits)
 {
  return ResultFromScode(E_FAIL);
 }   

 //   can't   set   bits   we   do   support   to   zero
 dwEnabledOptions&=dwSupportedBits;
 //   (we   already   know   there   are   no   extra   bits   in   mask   )
 if((dwOptionSetMask&dwEnabledOptions)!=dwOptionSetMask)
 {
  return ResultFromScode(E_FAIL);
 }
 //   don't   need   to   change   anything   since   we're   always   safe
 return ResultFromScode(S_OK);
}

编译成功后，浏览器默认安全级别也不会再报安全问题了

参考：http://topic.csdn.net/t/20020612/20/798933.html