网页ActiveX插件开发可能遇到的几个问题
http://blog.sina.com.cn/s/blog_537bf93c0100vn4j.html
1.模块"drawany.ocx"已加载 但对DllRegisterServer调用失败，错误代码 0x80040201
Ocx开发完毕后，在CMD窗口中，输入regsvr32 drawany.ocx，出现上述错误提示“模块"drawany.ocx"已加载 但对DllRegisterServer调用失败，错误代码0x80040201”
系统环境是Windows7，主要是用户权限限制UAC引起的，在开始菜单中找到-〉所有程序-〉附件-〉命令提示符，右键单击“命令提示符”，选择“以管理员身分运行”。
在cmd窗口中重新输入：regsvr32 drawany.ocx，提示成功。
2.所有dll、ocx和最后生成的cab文件都已经签名，网页可以弹窗可以安装，但是网页无法调用，把网站加入到信任站点后IE8可以使用，IE9还是无法使用，且每次都弹出警告框“......以阻止此站点用不安全方式使用......”或者“在此页上的ActiveX控件和本页上的其他部分的交互可能不安全，你想允许这种交互吗？”。
问题：安全代码。其中DrawAny.h和DrawAny.cpp是我的控件文件，大家可以修改成自己的。具体做法如下：
在DrawAnyCtrl.h中加入#include <objsafe.h>
一、在类构造申明后加入
public:
CDrawAnyCtrl();
DECLARE_INTERFACE_MAP()
BEGIN_INTERFACE_PART(ObjectSafety, IObjectSafety)
STDMETHOD(GetInterfaceSafetyOptions)(REFIID riid, DWORD __RPC_FAR *pdwSupportedOptions, DWORD __RPC_FAR *pdwEnabledOptions);
STDMETHOD(SetInterfaceSafetyOptions)(REFIID riid, DWORD dwOptionSetMask, DWORD dwEnabledOptions);
END_INTERFACE_PART(ObjectSafety)
二、在DrawAnyCtrl.cpp中加入
BEGIN_INTERFACE_MAP(CDrawAnyCtrl, COleControl)
INTERFACE_PART(CDrawAnyCtrl, IID_IObjectSafety, ObjectSafety)
END_INTERFACE_MAP()
// Implementation of IObjectSafety
STDMETHODIMP CDrawAnyCtrl::XObjectSafety::GetInterfaceSafetyOptions(REFIID riid, DWORD __RPC_FAR *pdwSupportedOptions, DWORD __RPC_FAR *pdwEnabledOptions)
{
METHOD_PROLOGUE_EX(CDrawAnyCtrl, ObjectSafety)
if (!pdwSupportedOptions || !pdwEnabledOptions)
{
return E_POINTER;
}
*pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
*pdwEnabledOptions = 0;
if (NULL == pThis->GetInterface(&riid))
{
TRACE("Requested interface is not supported.\n");
return E_NOINTERFACE;
}
// What interface is being checked out anyhow?
OLECHAR szGUID[39];
int i = StringFromGUID2(riid, szGUID, 39);
if (riid == IID_IDispatch)
{
// Client wants to know if object is safe for scripting
*pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER;
return S_OK;
}
else if (riid == IID_IPersistPropertyBag
|| riid == IID_IPersistStreamInit
|| riid == IID_IPersistStorage
|| riid == IID_IPersistMemory)
{
// Those are the persistence interfaces COleControl derived controls support
// as indicated in AFXCTL.H
// Client wants to know if object is safe for initializing from persistent data
*pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA;
return S_OK;
}
else
{
// Find out what interface this is, and decide what options to enable
TRACE("We didn't account for the safety of this interface, and it's one we support...\n");
return E_NOINTERFACE;
}
}
STDMETHODIMP CDrawAnyCtrl::XObjectSafety::SetInterfaceSafetyOptions(REFIID riid, DWORD dwOptionSetMask, DWORD dwEnabledOptions)
{
METHOD_PROLOGUE_EX(CDrawAnyCtrl, ObjectSafety)
OLECHAR szGUID[39];
// What is this interface anyway?
// We can do a quick lookup in the registry under HKEY_CLASSES_ROOT\Interface
int i = StringFromGUID2(riid, szGUID, 39);
if (0 == dwOptionSetMask && 0 == dwEnabledOptions)
{
// the control certainly supports NO requests through the specified interface
// so it's safe to return S_OK even if the interface isn't supported.
return S_OK;
}
// Do we support the specified interface?
if (NULL == pThis->GetInterface(&riid))
{
TRACE1("%s is not support.\n", szGUID);
return E_FAIL;
}
if (riid == IID_IDispatch)
{
TRACE("Client asking if it's safe to call through IDispatch.\n");
TRACE("In other words, is the control safe for scripting?\n");
if (INTERFACESAFE_FOR_UNTRUSTED_CALLER == dwOptionSetMask && INTERFACESAFE_FOR_UNTRUSTED_CALLER == dwEnabledOptions)
{
return S_OK;
}
else
{
return E_FAIL;
}
}
else if (riid == IID_IPersistPropertyBag
|| riid == IID_IPersistStreamInit
|| riid == IID_IPersistStorage
|| riid == IID_IPersistMemory)
{
TRACE("Client asking if it's safe to call through IPersist*.\n");
TRACE("In other words, is the control safe for initializing from persistent data?\n");
if (INTERFACESAFE_FOR_UNTRUSTED_DATA == dwOptionSetMask && INTERFACESAFE_FOR_UNTRUSTED_DATA == dwEnabledOptions)
{
return NOERROR;
}
else
{
return E_FAIL;
}
}
else
{
TRACE1("We didn't account for the safety of %s, and it's one we support...\n", szGUID);
return E_FAIL;
}
}
STDMETHODIMP_(ULONG) CDrawAnyCtrl::XObjectSafety::AddRef()
{
METHOD_PROLOGUE_EX_(CDrawAnyCtrl, ObjectSafety)
return (ULONG)pThis->ExternalAddRef();
}
STDMETHODIMP_(ULONG) CDrawAnyCtrl::XObjectSafety::Release()
{
METHOD_PROLOGUE_EX_(CDrawAnyCtrl, ObjectSafety)
return (ULONG)pThis->ExternalRelease();
}
STDMETHODIMP CDrawAnyCtrl::XObjectSafety::QueryInterface(REFIID iid, LPVOID* ppvObj)
{
METHOD_PROLOGUE_EX_(CDrawAnyCtrl, ObjectSafety)
return (HRESULT)pThis->ExternalQueryInterface(&iid, ppvObj);
}
3.所有dll、ocx和最后生成的cab文件都已经签名，且OCX中加入了安全代码，网页ActiveX在有的电脑上仍然安装不上。
问题：之前测试或者安装其它相关软件时，把相关的dll、ocx拷贝到了windows目录或者\windows\system32下。
解决：在cmd窗口中先regsvr32 -u xx.ocx，然后删除与cab包中文件名相同的文件。再重新打开网页，提示Cab安装，安装成功，网页自动调用控件。
