QPrinter: wrong margins/page width

[hp321]

Hi. I have problem with printing rectangle with QPrinter on real device. Rectangle which I would like to draw is often cliped by a printer. With bigger marins I have other issue. Right margin is larger than left. Code below works great when it's export to PDF file or PS.
What I am doing wrong? Please help me. Without this simple task I can not finish my project.

@QPrinter printer;
printer.setPageSize(QPrinter::A4);
printer.setFullPage(true);
// printer.setOutputFormat(QPrinter::PdfFormat);
// printer.setOutputFileName("test.pdf");

QRectF rect = printer.pageRect();

double margin = rect.width()*0.05;

QRectF body = QRectF(margin, margin, rect.width()-margin2, rect.height()-margin2);

QPainter painter(&printer);
painter.drawRect(body);

QTextOption option;
option.setAlignment(Qt::AlignRight);

painter.drawText(body, "test right", option);
painter.drawText(body, "test left");@

[edit: fixed typo in title, eddy]

[nicomesas]

Hello
Recently I found a similar problem when printing in Hewlett-Packard printers.

After many tests they decided to make a little app for test the same, but made with pure MFC (without using Qt). The result was the same.

Thus I have deduced that the problem is neither in my program or Qt, but must be in the printer driver as this problem has left me only with HP printers.

Regards

[hp321]

OK. I think that is the Qt problem because this WIN32 code works great (I have HP printer to):
@PRINTDLG pd;
ZeroMemory(&pd, sizeof(PRINTDLG));

pd.lStructSize = sizeof(PRINTDLG);
//pd.hwndOwner = m_hWnd;
pd.hDevMode = NULL;
pd.hDevNames = NULL;
pd.Flags = PD_USEDEVMODECOPIESANDCOLLATE | PD_RETURNDC;
pd.nCopies = 1;
pd.nFromPage = 0xFFFF;
pd.nToPage = 0xFFFF;
pd.nMinPage = 1;
pd.nMaxPage = 0xFFFF;

if (!PrintDlg(&pd))
{
QMessageBox::warning(0,"Problem", "Cos z drukarka");
exit(0);
}

int LM = 0.5GetDeviceCaps(pd.hDC, LOGPIXELSX);
int TM = 0.5GetDeviceCaps(pd.hDC, LOGPIXELSY);

int LO = LM - GetDeviceCaps(pd.hDC, PHYSICALOFFSETX);
int RO = LM - (GetDeviceCaps(pd.hDC, PHYSICALWIDTH) - GetDeviceCaps(pd.hDC, PHYSICALOFFSETX) - GetDeviceCaps(pd.hDC, HORZRES));
int TO = TM - GetDeviceCaps(pd.hDC, PHYSICALOFFSETY);
int BO = TM - (GetDeviceCaps(pd.hDC, PHYSICALHEIGHT) - GetDeviceCaps(pd.hDC, PHYSICALOFFSETY) - GetDeviceCaps(pd.hDC, VERTRES));

if (LO<0) LO = 0;
if (RO<0) RO = 0;
if (TO<0) TO = 0;
if (BO<0) BO = 0;

int PW = GetDeviceCaps(pd.hDC, HORZRES) - (LO+RO);
int PH = GetDeviceCaps(pd.hDC, VERTRES) - (TO+BO);

qDebug() << "margins: " << LM << TM;
qDebug() << "offsets: " << LO << RO << TO << BO;
qDebug() << "width, height: " << PW << PH;
qDebug() << "width, height2: " << GetDeviceCaps(pd.hDC, HORZRES) << GetDeviceCaps(pd.hDC, VERTRES);

DOCINFO di;
di.cbSize = sizeof(DOCINFO);
di.lpszOutput = (LPTSTR)NULL;
di.fwType = 0;
StartDoc (pd.hDC, &di);
StartPage(pd.hDC);

// OUR RECTANGLE !!!
Rectangle(pd.hDC, LO, TO, LO+PW, TO+PH);

EndPage(pd.hDC);
EndDoc(pd.hDC);
DeleteDC(pd.hDC);@

Maybe the solution is in to mix WIN32 code with Qt?