activex调用.html,在ActiveX里调用html中的js函数-优快云博客

其实是抄的别人的代码。我改了改而已。

IOleClientSite在ATL和MFC的控件类里都可以拿得到。没任何问题。

#pragma once

#include

class CJsInvoker

{

public:

CJsInvoker();

BOOL CallJsFunction(const BSTR strJSFuncName, std::vector<:wstring> vCallArgs);

BOOL Init(IOleClientSite* pClientSite);

protected:

IOleClientSite*m_pClientSite;//

IWebBrowser2*m_spBrowser;//

IHTMLDocument2* m_spDoc;//

};

--------------------------无耻的分割线-----------------------------------------------

#include "stdafx.h"

#include "JSInvoker.h"

BSTR Copy(const wchar_t* str) throw()

{

if (str == NULL)

{

return NULL;

}

return ::SysAllocStringByteLen((char*)str, (wcslen(str) + 1) * sizeof(wchar_t) );

}

// copy BSTR to VARIANT

_Check_return_ HRESULT CopyTo(const wchar_t* str , _Out_opt_ VARIANT *pvarDest) throw()

{

ATLASSERT(pvarDest != NULL);

HRESULT hRes = E_POINTER;

if (pvarDest != NULL)

{

pvarDest->vt = VT_BSTR;

pvarDest->bstrVal = Copy(str);

#pragma warning(push)

#pragma warning(disable:4068)

#pragma prefast(push)

#pragma prefast(disable:325, "We are checking allocation semantics here")

if (pvarDest->bstrVal == NULL && str != NULL)

{

hRes = E_OUTOFMEMORY;

}

#pragma prefast(pop)

#pragma warning(pop)

else

{

hRes = S_OK;

}

return hRes;

}

BOOL CJsInvoker::CallJsFunction(const BSTR strJSFuncName , std::vector<:wstring> vCallArgs)

{

HRESULT hr = S_OK;

try

{

CComPtr pScript;

hr = m_spDoc->get_Script(&pScript);

CComBSTR bstrMember(strJSFuncName);

DISPID dispid;

hr = pScript->GetIDsOfNames(::IID_NULL, &bstrMember, 1, LOCALE_SYSTEM_DEFAULT, &dispid);

DISPPARAMS dispparams;

memset(&dispparams, 0, sizeof dispparams);

dispparams.cArgs = vCallArgs.size();

dispparams.rgvarg = new VARIANT[dispparams.cArgs];

for(size_t i = 0; i < vCallArgs.size(); i++)

{

CopyTo(vCallArgs[i].c_str() , &dispparams.rgvarg[i]);

dispparams.rgvarg[i].vt = VT_BSTR;

}

dispparams.cNamedArgs = 0;

EXCEPINFO excepInfo;

memset(&excepInfo, 0, sizeof excepInfo);

CComVariant vaResult;

UINT nArgErr = (UINT)-1; //initialize to invalid arg

hr = pScript->Invoke(dispid, ::IID_NULL, 0, DISPATCH_METHOD, &dispparams, &vaResult, &excepInfo, &nArgErr);

for(size_t i = 0; i < vCallArgs.size(); i++)

{

::SysFreeString(dispparams.rgvarg[i].bstrVal);

}

delete [] dispparams.rgvarg;

}

catch(...)

{

return FALSE;

}

return (hr == S_OK ? TRUE : FALSE);

}

CJsInvoker::CJsInvoker()

{

m_pClientSite = NULL;

m_spBrowser = NULL;

m_spDoc = NULL;

}

BOOL CJsInvoker::Init(IOleClientSite* pClientSite)

{

m_pClientSite = pClientSite;

HRESULT hr = S_OK;

::IServiceProvider* isp = NULL;

::IServiceProvider* isp2 = NULL;

try

{

if (m_pClientSite == NULL)

{

return FALSE;

}

hr = m_pClientSite->QueryInterface(::IID_IServiceProvider, reinterpret_cast(&isp));

if( FAILED(hr) )

{

return FALSE;

}

hr = isp->QueryService(::SID_STopLevelBrowser, ::IID_IServiceProvider, reinterpret_cast(&isp2));

if( FAILED(hr) )

{

return FALSE;

}

hr = isp2->QueryService(::SID_SWebBrowserApp, ::IID_IWebBrowser2, reinterpret_cast(&m_spBrowser));

if( FAILED(hr) )

{

return FALSE;

}

if(m_spDoc != NULL)

{

delete m_spDoc;

m_spDoc = NULL;

}

hr = m_spBrowser->get_Document((IDispatch**)&m_spDoc);

if( FAILED(hr) )

{

return FALSE;

}

return TRUE;

}

catch(...)

{

return FALSE;

}