Höhe und Breite von Richedittext ermitteln?

tocha

Grünschnabel
Hallo,

wie kann man Höhe und Breite von einem Richedittext ermitteln?
Hab mit dem Beispiel aus MSDN versucht -> Programmabsturz.

// The pointer to my rich edit control.
extern CRichEditCtrl* pmyRichEditCtrl;
// A pointer to a printer DC.
extern CDC* pMyPrinterDC;

FORMATRANGE fr;

// Get the page width and height from the printer.
long lPageWidth = ::MulDiv(pMyPrinterDC->GetDeviceCaps(PHYSICALWIDTH),
1440, pMyPrinterDC->GetDeviceCaps(LOGPIXELSX));
long lPageHeight = ::MulDiv(pMyPrinterDC->GetDeviceCaps(PHYSICALHEIGHT),
1440, pMyPrinterDC->GetDeviceCaps(LOGPIXELSY));
CRect rcPage(0, 0, lPageWidth, lPageHeight);

// Format the text and render it to the printer.
fr.hdc = pMyPrinterDC->m_hDC;
fr.hdcTarget = pMyPrinterDC->m_hDC;
fr.rc = rcPage;
fr.rcPage = rcPage;
fr.chrg.cpMin = 0;
fr.chrg.cpMax = -1;
pmyRichEditCtrl->FormatRange(&fr, TRUE);

// Update the display with the new formatting.
RECT rcClient;
pmyRichEditCtrl->GetClientRect(&rcClient);
pmyRichEditCtrl->DisplayBand(&rcClient);


Hat jemand eine andere Idee?

Mfg,
tocha