Cannot print landscape with default printer

tataxin

I try to print a window, using this article: http://support.microsoft.com/kb/186736 It works, but I want to user default printer with landscape. So I try to modify the GetPrinterDC(), like this:

HDC CLogACTsPrintHelper::GetPrinterDC(void)
{
CWaitCursor wait;
PRINTDLG pdlg;
memset( &pdlg, 0, sizeof(PRINTDLG));
pdlg.lStructSize = sizeof(PRINTDLG);

// use default printer
pdlg.Flags = PD_RETURNDEFAULT | PD_RETURNDC;

// set landscape
AfxGetApp()->GetPrinterDeviceDefaults(&pdlg);
DEVMODE* lpDevMode = (DEVMODE*)::GlobalLock(pdlg.hDevMode);
lpDevMode->dmOrientation = (short)DMORIENT_LANDSCAPE;
::ResetDC(pdlg.hDC,lpDevMode);
::GlobalUnlock(pdlg.hDevMode);
// end set landscape

PrintDlg( &pdlg );      


return pdlg.hDC;

}

But I don't know why it return NULL??? If I comment all source code in set landscape block, it works. Or if I do not use default printer and set landscape, it work

// do not use default printer
pdlg.Flags = PD_RETURNDC;
// set landscape
...

Can anyone explain me what's wrong here? Thank you in advance, :)

tataxin

help me, pleasee!!!

Nelek

Well, I don't know if you are using MFC, but I made it like that:

BOOL CMyFormView::OnPreparePrinting(CPrintInfo* pInfo)
{ // Standardvorbereitung
delete pInfo->m_pPD ; // Release previous MFC allocated standard dialog object
//Miguel: Attach the new CDlgPrinting
pInfo->m_pPD = new CDlgPrinting(FALSE, PD_ALLPAGES | PD_USEDEVMODECOPIES | PD_NOPAGENUMS
| PD_HIDEPRINTTOFILE | PD_NOSELECTION, this) ; //My own CPrintDialog self defined
pInfo->m_pPD->m_pd.hInstance = AfxGetInstanceHandle();
pInfo->m_pPD->m_pd.lpPrintTemplateName = MAKEINTRESOURCE(IDD_PRINT_PRDLG);
pInfo->m_pPD->m_pd.Flags |= PD_ENABLEPRINTTEMPLATE;
pInfo->m_pPD->m_pd.nMinPage = 1;
.
// Other checks and configurations
.
if (pInfo->m_bPreview)
return DoPreparePrinting(pInfo);

int nAnswer = pInfo->m\_pPD->DoModal ();
if (nAnswer == IDCANCEL)
	return FALSE;

pInfo->m\_pPD->m\_pd.hDC = pInfo->m\_pPD->CreatePrinterDC ();

return TRUE;

}

//*********************************

void CMyFormView::OnPrepareDC(CDC* pDC, CPrintInfo* pInfo)
{ // TODO: Speziellen Code hier einfügen und/oder Basisklasse aufrufen
if (pDC->IsPrinting ())
{ DEVMODE* devMode = pInfo->m_pPD->GetDevMode ();
devMode->dmOrientation = DMORIENT_LANDSCAPE;
devMode->dmFields |= DM_ORIENTATION;
pDC->ResetDC (devMode);
}

CFormView::OnPrepareDC(pDC, pInfo);

}

//*********************************

void CMyFormView::OnPrint(CDC* pDC, CPrintInfo* pInfo)
{ // TODO: Speziellen Code hier einfügen und/oder Basisklasse aufrufen
// Setting printing parameters
pDC->SetMapMode (MM_LOMETRIC);

double dLeftOffset = 200 - (pDC->GetDeviceCaps (PHYSICALOFFSETX) \* 254.0) / pDC->GetDeviceCaps (LOGPIXELSX);
double dTopOffset = 200 - (pDC->GetDeviceCaps (PHYSICALOFFSETY) \* 254.0) / pDC->GetDeviceCaps (LOGPIXELSY);
double dRightMargin = 2770 - (pDC->GetDeviceCaps (PHYSICALOFFSETX) \* 254.0) / pDC->GetDeviceCaps (LOGPIXELSX);
double dBottomMargin = 1950 - (pDC->GetDeviceCaps (PHYSICALOFFSETY) \* 254.0) / pDC->GetDeviceCaps (LOGPIXELSY);

pInfo->m\_rectDraw.left += (int) dLeftOffset;
pInfo->m\_rectDraw.top += (int) dTopOffset;
pInfo->m\_rectDraw.right = (int) dRightMargin;
pInfo->m\_rectDraw.bottom = (int) dBottomMargin;

..........
.......
,....

I don't know if it is totally correct and I guess it can be optimized, but it works. I hope it helps you

Regards. --------

tataxin

Thank you, Nelek. I will try it now!