BUG: Multiple CRichEditView::PrintInsideRect's Are Distorted (153239)
The information in this article applies to:
- The Microsoft Foundation Classes (MFC), when used with:
- Microsoft Visual C++, 32-bit Editions 4.0
- Microsoft Visual C++, 32-bit Editions 4.1
- Microsoft Visual C++, 32-bit Enterprise Edition 4.2
- Microsoft Visual C++, 32-bit Enterprise Edition 5.0
- Microsoft Visual C++, 32-bit Enterprise Edition 6.0
- Microsoft Visual C++, 32-bit Professional Edition 4.2
- Microsoft Visual C++, 32-bit Professional Edition 5.0
- Microsoft Visual C++, 32-bit Professional Edition 6.0
- Microsoft Visual C++, 32-bit Learning Edition 6.0
- Microsoft Visual C++ .NET (2003)
- Microsoft Visual C++ .NET (2002)
This article was previously published under Q153239 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. 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. RESOLUTION Save the DC before calling PrintInsideRect(), and restore
it after returning. Refer to the "Sample Code" section of this article for
details. 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);
}
| Modification Type: | Major | Last Reviewed: | 9/18/2003 |
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| Keywords: | kbBug kbnofix kbprint KB153239 |
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