Internet Explorer Does Not Apply an Updated Global Style Sheet Through GetHostInfo (328803)

RESOLUTION

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Internet Explorer 6 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

   Date      Time     Version       Size       File name
   -------------------------------------------------------
   03-Oct-02 13:14    6.0.2722.300  2,763,264  Mshtml.dll

MORE INFORMATION

This problem occurs only after MSHTML is initialized. This means that if you open a non-MSHTML document (such as a Microsoft Word document or any other type of active document server document), the next time you open an HTML file, MSHTML reinitializes the global style sheet with what is provided in the IDocHostUIHandler::GetHostInfo implementation.

Steps to Reproduce the Problem

In Visual Studio .NET, create a Microsoft Foundation Classes (MFC) Single Document Interface (SDI) CHtmlView application.
Add a member variable to the view class that will hold the current global style sheet:
```
class CMFCTestView : public CHtmlView
{
...
	LPWSTR m_pZoom;
...
};
```
Initialize the member variable to the initial style sheet that you want in the constructor:
```
CMFCTestView::CMFCTestView()
{
	m_pZoom = L"BODY{Zoom:200%;}";
}
```

Override the OnGetHostInfo virtual function of CHtmlView to implement the code to apply the global style sheet through the GetHostInfo method. IDocHostUIHandler::GetHostInfo is implemented in CHtmlControlSite and calls the method that OnGetHostInfo uses in the view.

// header file
class CMFCTestView : public CHtmlView
{
...
virtual HRESULT OnGetHostInfo(DOCHOSTUIINFO *pInfo);
...
};

// implementation file
HRESULT CMFCTestView::OnGetHostInfo(DOCHOSTUIINFO *pInfo)
{
	pInfo->pchHostCss = (LPWSTR)::CoTaskMemAlloc((lstrlenW(m_pZoom)+1)*2);
	lstrcpyW(pInfo->pchHostCss, m_pZoom);
	return S_OK;
}

Add a menu item and its handler to the CHTMLView derived class. In the menu handler, call the IWebBrowser2::Refresh() method. IWebBrowser2::Refresh() applies the new global style sheet to the active Web page.
```
void CMFCTestView::OnActionTest()
{
	m_pZoom = L"BODY{Zoom:50%;}";
	m_pBrowserApp->Refresh();
}
```

Update the OnInitialUpdate method of the view to point to your test HTML page:

void CMFCTestView::OnInitialUpdate()
{
	CHtmlView::OnInitialUpdate();
	Navigate2(_T("http://myserver/mytestpage.htm"),NULL,NULL);
}

Build and run the application. When the page is first displayed, everything appears magnified by 200 percent.
Use the menu action that you added to apply the new style. Without the hotfix, the page refreshes, but the magnification remains the same. After you apply the hotfix, the page refreshes and appears with the 50 percent magnification.

Internet Explorer Does Not Apply an Updated Global Style Sheet Through GetHostInfo (328803)

SYMPTOMS

CAUSE

RESOLUTION

STATUS

MORE INFORMATION

Steps to Reproduce the Problem