编写在浏览器中不弹出警告的ActiveX控件

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我们在编写ActiveX控件时，如果用在浏览器中，经常都会弹出现在运行的脚本不安全的提示， 如果给客户使用，将会带来极大不便。按照MSDN的介绍通常有两种一种是实现IObjectSafe接口，一种是通过修改注册表的方法。一般如果用ATL开发ActiveX控件，就用实现ObjectSafe接口的方法。如果用MFC开发，我觉得还是用修改注册表的方法比较方便。下面我们将第二种方法：

要包括两个文件

#include "comcat.h"

#include "Objsafe.h"

// 本控件的CLSID,注册表用

const GUID CDECL CLSID_SafeItem =

		{ 0x7AE7497B, 0xCAD8, 0x4E66, { 0xA5,0x8B,0xDD,0xE9,0xBC,0xAF,0x6B,0x61 } };

// 创建组件种类

HRESULT CreateComponentCategory(CATID catid, WCHAR* catDescription)

{

    ICatRegister* pcr = NULL ;

    HRESULT hr = S_OK ;



    hr = CoCreateInstance(CLSID_StdComponentCategoriesMgr, 

            NULL, CLSCTX_INPROC_SERVER, IID_ICatRegister, (void**)&pcr);

    if (FAILED(hr))

        return hr;



    // Make sure the HKCR\Component Categories\{..catid...}

    // key is registered.

    CATEGORYINFO catinfo;

    catinfo.catid = catid;

    catinfo.lcid = 0x0409 ; // english



    // Make sure the provided description is not too long.

    // Only copy the first 127 characters if it is.

    int len = wcslen(catDescription);

    if (len>127)

        len = 127;

    wcsncpy(catinfo.szDescription, catDescription, len);

    // Make sure the description is null terminated.

    catinfo.szDescription[len] = ''\0'';



    hr = pcr->RegisterCategories(1, &catinfo);

        pcr->Release();



    return hr;

}

// 注册组件种类

HRESULT RegisterCLSIDInCategory(REFCLSID clsid, CATID catid)

{

    // Register your component categories information.

    ICatRegister* pcr = NULL ;

    HRESULT hr = S_OK ;

    hr = CoCreateInstance(CLSID_StdComponentCategoriesMgr, 

                NULL, CLSCTX_INPROC_SERVER, IID_ICatRegister, (void**)&pcr);

    if (SUCCEEDED(hr))

    {

       // Register this category as being "implemented" by the class.

       CATID rgcatid[1] ;

       rgcatid[0] = catid;

       hr = pcr->RegisterClassImplCategories(clsid, 1, rgcatid);

    }

    if (pcr != NULL)

        pcr->Release();

    return hr;

}

// 卸载组件种类

HRESULT UnRegisterCLSIDInCategory(REFCLSID clsid, CATID catid)

{

    ICatRegister* pcr = NULL ;

    HRESULT hr = S_OK ;



    hr = CoCreateInstance(CLSID_StdComponentCategoriesMgr, 

            NULL, CLSCTX_INPROC_SERVER, IID_ICatRegister, (void**)&pcr);

    if (SUCCEEDED(hr))

    {

       // Unregister this category as being "implemented" by the class.

       CATID rgcatid[1] ;

       rgcatid[0] = catid;

       hr = pcr->UnRegisterClassImplCategories(clsid, 1, rgcatid);

    }



    if (pcr != NULL)

        pcr->Release();



    return hr;

}

// DllRegisterServer - Adds entries to the system registry

STDAPI DllRegisterServer(void)

{

	HRESULT hr;



	AFX_MANAGE_STATE(_afxModuleAddrThis);



	if (!AfxOleRegisterTypeLib(AfxGetInstanceHandle(), _tlid))

		return ResultFromScode(SELFREG_E_TYPELIB);



	if (!COleObjectFactoryEx::UpdateRegistryAll(TRUE))

		return ResultFromScode(SELFREG_E_CLASS);



    // 标记控件初始化安全.

    // 创建初始化安全组件种类

    hr = CreateComponentCategory(CATID_SafeForInitializing, L"Controls safely initializable from persistent data!");

    if (FAILED(hr))

        return hr;

    // 注册初始化安全

    hr = RegisterCLSIDInCategory(CLSID_SafeItem, CATID_SafeForInitializing);

    if (FAILED(hr))

        return hr;



    // 标记控件脚本安全

    // 创建脚本安全组件种类 

    hr = CreateComponentCategory(CATID_SafeForScripting, L"Controls safely scriptable!");

    if (FAILED(hr))

        return hr;

    // 注册脚本安全组件种类

    hr = RegisterCLSIDInCategory(CLSID_SafeItem, CATID_SafeForScripting);

    if (FAILED(hr))

        return hr;



	return NOERROR;

}

// DllUnregisterServer - Removes entries from the system registry

STDAPI DllUnregisterServer(void)

{

	HRESULT hr;



	AFX_MANAGE_STATE(_afxModuleAddrThis);



	if (!AfxOleUnregisterTypeLib(_tlid, _wVerMajor, _wVerMinor))

		return ResultFromScode(SELFREG_E_TYPELIB);



	if (!COleObjectFactoryEx::UpdateRegistryAll(FALSE))

		return ResultFromScode(SELFREG_E_CLASS);



    // 删除控件初始化安全入口.

    hr=UnRegisterCLSIDInCategory(CLSID_SafeItem, CATID_SafeForInitializing);

    if (FAILED(hr))

        return hr;

    // 删除控件脚本安全入口

    hr=UnRegisterCLSIDInCategory(CLSID_SafeItem, CATID_SafeForScripting);

    if (FAILED(hr))

        return hr;



//////////////////////////

	return NOERROR;

}

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