C++ 如何使用IProtectFocus使CDHtmlDialog从editBox的图形焦点导航?
我知道IProtectFocus接口AllowFocusChange函数可以解决CDHtmlDialog执行navigate()函数时的“焦点窃取问题”,但我不太清楚如何在代码中实现IProtectFocus函数。谁能帮我一下吗?任何代码示例都非常感谢 更详细地说,我可以实现IInternetSecurityManager接口来修复javascript ActiveX权限问题。但我尝试了同样的方法来实现IProtectFocus,但不起作用。 我只需要C++代码,谢谢!p> 我的代码示例:(CCustomControlSite是定制的IWebBrowser控件,CInstantAnswerDlg是CDHtmlDialog。) MFC接口部分:C++ 如何使用IProtectFocus使CDHtmlDialog从editBox的图形焦点导航?,c++,com,focus,activex,C++,Com,Focus,Activex,我知道IProtectFocus接口AllowFocusChange函数可以解决CDHtmlDialog执行navigate()函数时的“焦点窃取问题”,但我不太清楚如何在代码中实现IProtectFocus函数。谁能帮我一下吗?任何代码示例都非常感谢 更详细地说,我可以实现IInternetSecurityManager接口来修复javascript ActiveX权限问题。但我尝试了同样的方法来实现IProtectFocus,但不起作用。 我只需要C++代码,谢谢!p> 我的代码示例:(CC
class CCustomControlSite: public COleControlSite
{
public:
CCustomControlSite(COleControlContainer *pCnt):COleControlSite(pCnt){}
protected:
DECLARE_INTERFACE_MAP();
// Implement IServiceProvider
BEGIN_INTERFACE_PART(ServiceProvider, IServiceProvider)
STDMETHOD(QueryService)(REFGUID,REFIID,void**);
END_INTERFACE_PART(ServiceProvider)
// Implement IServiceProvider
BEGIN_INTERFACE_PART(ProtectFocus, IProtectFocus)
STDMETHOD(AllowFocusChange)(BOOL *);
END_INTERFACE_PART(ProtectFocus)
};
实施部分:
ULONG FAR EXPORT CCustomControlSite::XServiceProvider::AddRef()
{
METHOD_PROLOGUE(CCustomControlSite, ServiceProvider)
return pThis->ExternalAddRef();
}
ULONG FAR EXPORT CCustomControlSite::XServiceProvider::Release()
{
METHOD_PROLOGUE(CCustomControlSite, ServiceProvider)
return pThis->ExternalRelease();
}
HRESULT FAR EXPORT CCustomControlSite::XServiceProvider::QueryInterface(REFIID riid,void** ppvObj)
{
METHOD_PROLOGUE(CCustomControlSite, ServiceProvider)
HRESULT hr = (HRESULT)pThis->ExternalQueryInterface(&riid, ppvObj);
return hr;
}
STDMETHODIMP CCustomControlSite::XServiceProvider::QueryService(REFGUID guidService,REFIID riid,void** ppvObject)
{
if (guidService == SID_SInternetSecurityManager &&
riid == IID_IInternetSecurityManager)
{
METHOD_PROLOGUE(CCustomControlSite, ServiceProvider)
HRESULT hr = (HRESULT)pThis->ExternalQueryInterface(&riid, ppvObject);
return hr;
}
else
{
*ppvObject = NULL;
}
return E_NOINTERFACE;
}
// ProtectFocus Methods
ULONG FAR EXPORT CCustomControlSite::XProtectFocus::AddRef()
{
METHOD_PROLOGUE(CCustomControlSite, ProtectFocus)
return pThis->ExternalAddRef();
}
ULONG FAR EXPORT CCustomControlSite::XProtectFocus::Release()
{
METHOD_PROLOGUE(CCustomControlSite, ProtectFocus)
return pThis->ExternalRelease();
}
HRESULT FAR EXPORT CCustomControlSite::XProtectFocus::QueryInterface(REFIID riid,void** ppvObj)
{
METHOD_PROLOGUE(CCustomControlSite, ProtectFocus)
HRESULT hr = (HRESULT)pThis->ExternalQueryInterface(&riid, ppvObj);
return hr;
}
STDMETHODIMP CCustomControlSite::XProtectFocus::AllowFocusChange(BOOL *pfAllow)
{
*pfAllow = FALSE;
return S_OK;
}
将控件添加到CDHtmlDialog:
BOOL CInstantAnswerDlg::CreateControlSite(COleControlContainer* pContainer,COleControlSite** ppSite,UINT /* nID */,REFCLSID /* clsid */ )
{
if(ppSite == NULL)
{
ASSERT(FALSE);
return FALSE;
}
m_pCustSite = m_insAnswerManager->CreateSite(pContainer);
if (!m_pCustSite)
return FALSE;
*ppSite = m_pCustSite;
return TRUE;
}
问题是XProtectFocus::QueryInterface和XProtectFocus::AllowFocusChange函数都没有被调用,而XServiceProvider::QueryInterface可以被调用。我错在哪里了???您将IProtectFocus和IInternetSecurityManager的实现放在哪里取决于您对QueryService的实现。由于您在实现中调用的是CCustomControlSite::ExternalQueryInterface,因此需要添加CCustomControlSite类。请添加语言标记谢谢,我已经阅读了MSDN文档,并将ProtectFocus接口添加到我的CCustomControlSite类中,但当代码执行时,它不会调用我的函数。我已经编辑了我的问题,请帮我检查这个问题,非常感谢。