Microsoft KB Archive/153239

= BUG: Multiple CRichEditView::PrintInsideRect's Are Distorted =

Article ID: 153239

Article Last Modified on 9/18/2003

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APPLIES TO

 Microsoft Foundation Class Library 4.2, when used with:  Microsoft Visual C++ 4.0 Standard Edition

 Microsoft Visual C++ 4.1 Subscription

 Microsoft Visual C++ 4.2 Enterprise Edition

 Microsoft Visual C++ 5.0 Enterprise Edition</li></ul>

 Microsoft Visual C++ 6.0 Enterprise Edition</li></ul>

 Microsoft Visual C++ 4.2 Professional Edition</li></ul>

 Microsoft Visual C++ 5.0 Professional Edition</li></ul>

 Microsoft Visual C++ 6.0 Professional Edition</li></ul>

 Microsoft Visual C++ 6.0 Standard Edition</li></ul>

 Microsoft Visual C++ .NET 2003 Standard Edition</li></ul>

 Microsoft Visual C++ .NET 2002 Standard Edition</li></ul> </li></ul>

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<div class="notice_section">

This article was previously published under Q153239

<div class="symptoms_section">

SYMPTOMS
When you use CRichEditView::PrintInsideRect more than once during printing, the text printed by calls after the first one appears either distorted or missing in Print Preview mode.

<div class="cause_section">

CAUSE
The PrintInsideRect scales the window extents of the DC before formatting and printing the requested text to that DC. This scaling is necessary and works for the first call. However, PrintInsideRect does not undo the scaling before returning. Hence, the scaling will be cumulative, causing future prints to be distorted or scaled out of the visible portion of the DC.

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RESOLUTION
Save the DC before calling PrintInsideRect, and restore it after returning. Refer to the "Sample Code" section of this article for details.

<div class="status_section">

STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this bug and will post new information here in the Microsoft Knowledge Base as it becomes available.

Sample Code
Here is an example of making multiple PrintInsideRect calls per page using SaveDC and RestoreDC to keep the scaling from accumulating: void CThatSillyRichEditView::OnPrint(CDC* pDC, CPrintInfo* pInfo) {      // Get the current paper size and construct an actual printing // rectangle by leaving out one half inch margin from each side. CSize sizePaper = GetPaperSize; CRect rectMargins(720, 720, sizePaper.cx - 720, sizePaper.cy - 720);

// Need to set the margins when printing from CRichEditView SetMargins(rectMargins);

// Set up three rectangular regions spaced an inch apart CRect rectHeader(0, 0, rectMargins.right, 1440); CRect rectBody(0, 1440, rectMargins.right, 1440 * 2); CRect rectFooter(0, 1440 * 2, rectMargins.right, 1440 * 3);

// Format the first 10 characters in the buffer. int nSavedDC = pDC->SaveDC; PrintInsideRect(pDC, rectHeader, 0, 10, TRUE); // characters 0-10 pDC->RestoreDC(nSavedDC);

// Format the second 10 characters in the buffer. nSavedDC = pDC->SaveDC; PrintInsideRect(pDC, rectBody, 10, 20, TRUE); // characters 10-20 pDC->RestoreDC(nSavedDC);

// Format the third 10 characters in the buffer. nSavedDC = pDC->SaveDC; PrintInsideRect(pDC, rectFooter, 20, 30, TRUE); // characters 20-30 pDC->RestoreDC(nSavedDC); }

Additional query words: MfcPrinting

Keywords: kbbug kbnofix kbprint KB153239

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