从 IHTMLDocument2 获得/写入 HTML 文本 (IPersistStreamInit)
void CUxHtmlViewerView::SetScript(LPCTSTR lpszTxt)
{
Navigate(_T("about:blank"),NULL,NULL,NULL,NULL);
HRESULT hr = E_NOINTERFACE;
CComPtr<IHTMLDocument2> spHTMLDocument = static_cast<IHTMLDocument2*>(this->GetHtmlDocument());
CStreamOnCString stream(lpszTxt);
CComQIPtr<IPersistStreamInit> spPSI;
if (spHTMLDocument)
{
spPSI = spHTMLDocument;
if (spPSI)
hr = spPSI->Load(static_cast<IStream*>(&stream));
}
}
/////////////////////////////////////////////////////////////////////////////
// CHtmlView operations
BOOL CHtmlView::GetSource(CString& refString)
{
BOOL bRetVal = FALSE;
CComPtr<IDispatch> spDisp = GetHtmlDocument();
if (spDisp != NULL)
{
HGLOBAL hMemory;
hMemory = GlobalAlloc(GMEM_MOVEABLE, 0);
if (hMemory != NULL)
{
CComQIPtr<IPersistStreamInit> spPersistStream = spDisp;
if (spPersistStream != NULL)
{
CComPtr<IStream> spStream;
if (SUCCEEDED(CreateStreamOnHGlobal(hMemory, TRUE, &spStream)))
{
spPersistStream->Save(spStream, FALSE);
LPCTSTR pstr = (LPCTSTR) GlobalLock(hMemory);
if (pstr != NULL)
{
// Stream is always ANSI, but CString
// assignment operator will convert implicitly.
bRetVal = TRUE;
TRY
{
refString = pstr;
}
CATCH_ALL(e)
{
bRetVal = FALSE;
DELETE_EXCEPTION(e);
}
END_CATCH_ALL
if(bRetVal == FALSE)
GlobalFree(hMemory);
else
GlobalUnlock(hMemory);
}
}
}
}
}
return bRetVal;
}
向 IHTMLDocument2 写入 HTML 文本
int CChildView::HqResize(void)
{
USES_CONVERSION;
CComPtr<IHTMLDocument2> pDoc;
CComPtr<IHTMLElementCollection> sphtmlAll;
CComPtr<IHTMLScriptElement> spObject;
CComPtr<IDispatch> spDisp;
CComVariant varName;
CComVariant varIndex;
if(FAILED(m_wndHq.GetDocument(&pDoc)) || pDoc==NULL)
return 0;
CString strHtml="<html><head><title>网页行情</title></head>"
"<body leftmargin=0 topmargin=0>"
"<OBJECT ID=KYT CODEBASE='http://www.sostock.com.cn/hq/webhq/webhq.cab#version=1,0,0,5'"
"CLASSID='clsid:C952403E-C18D-4332-9F3D-0E1D7C486145'"
"ALIGN='CENTER'"
"width='%d'"
"height='%d'>"
"</OBJECT>"
"<script language=javascript id=KYT1>"
"window.focus();"
"</script>"
"</body>"
"</html>";
CRect rc;
GetClientRect(&rc);
CString strIn;
strIn.Format(strHtml,rc.Width()-20,rc.Height()-15);
CComQIPtr<IPersistStreamInit> spPersistStream(pDoc);
if(spPersistStream==NULL)
return 0;
LPTSTR lpMem = (LPTSTR)::GlobalAlloc( GPTR,strIn.GetLength()+1);
lstrcpy(lpMem,strIn.GetBuffer());
CComPtr<IStream>spStream;
CreateStreamOnHGlobal( lpMem, TRUE, &spStream );
// 初始化后，装载显示
spPersistStream->InitNew();
spPersistStream->Load(spStream );
return 0;
}
先打开一个 about:blank 空白页面才能得到 HtmlDocument
int CHotDlgNews::NewMsg(CString strMsg)
{
m_ocxMsg.Navigate(("about:blank"),NULL,NULL,NULL,NULL);
CComPtr<IDispatch> spDisp = m_ocxMsg.get_Document();
if(spDisp != NULL)
{
CComQIPtr<IPersistStreamInit> spPersistStream(spDisp);
if (spPersistStream != NULL)
{
LPTSTR lpMem = (LPTSTR)::GlobalAlloc( GPTR,strMsg.GetLength()+1);
lstrcpy(lpMem,strMsg.GetBuffer());
CComPtr<IStream>spStream;
CreateStreamOnHGlobal( lpMem, TRUE, &spStream );
// 初始化后，装载显示
spPersistStream->InitNew();
spPersistStream->Load(spStream );
}
}
m_strSms=strMsg;
m_vMsgVector.push_back(strMsg);
UpdateData(FALSE);
ShowWindow(SW_SHOW);
this->SetFocus();
return 0;
}
今天用这个方法 向 IE 控件写入 HTML代码，可是在 win2000 pro ie 6 的机器上死活只显示 HTML 源代码，不出页面效果。。。。折腾了一天。。后来发现要把HTML代码写全他才认。。。
我只写了
<div>你好</div><br><div>你好</div> 他就不认识。。。
后来写成：
<html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /></head><body><div>你好</div><br>< div>你好</div></body></html>
他就认识了。。。晕~~ 好弱智。。。