计算机科学论坛--编写浏览器不弹出警告的ActiveX控件

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IObjectSafe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 } };
// 版本控制
const WORD _wVerMajor = 1;
// 次版本号
const WORD _wVerMinor = 0;

/////////////////////////////////////////////////////////////////////
// CICCardApp::InitInstance - DLL initialization

BOOL CICCardApp::InitInstance()
{
BOOL bInit = COleControlModule::InitInstance();

if (bInit)
{

}

return bInit;
}

//////////////////////////////////////////////////////////////////////
// CICCardApp::ExitInstance - DLL termination

int CICCardApp::ExitInstance()
{
return COleControlModule::ExitInstance();
}

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

// 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;
}
完。


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