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Thread: QPrinter and QPainter do not print to local printer under Windows (QT4)

  1. #1
    Join Date
    Apr 2016
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    Qt products
    Qt4
    Platforms
    Unix/X11 Windows

    Question QPrinter and QPainter do not print to local printer under Windows (QT4)

    Hi,

    I'm having some troubles with printing under Windows. I'm setting a qprinter via a qprintdialog and pass the qprinter to a method which creates a qpainter on the qprinter. Essentially:
    Qt Code:
    1. void functionA()
    2. {
    3. QPrinter printer;
    4. printer.setColorMode( QPrinter::Color );
    5. printer.setOrientation( QPrinter::Landscape );
    6. QPrintDialog printDialog( &printer, this );
    7. if ( printDialog.exec() != QDialog::Accepted )
    8. return;
    9. print( printer );
    10. }
    11.  
    12. void print( QPrinter &printer )
    13. {
    14. printer.setOutputFormat( QPrinter::PdfFormat );
    15. printer.setPaperSize( _gttPrintDialog->pdfPaperSize() );
    16. printer.setFullPage( true );
    17. QPainter painter( &printer );
    18. // ...work with the painter...
    19. }
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    This results in no printout under Windows but under Linux there are no problems. Additionally, as soon as I define the printer inside print(...) everything works like a charm. Sadly, this is no permanent option and it seems like QPrinter can neither be passed by value nor can be copied to a local variable.
    What's the reason for this behavior under Windows and is there any solution simpler than passing qpainters instead of qprinters and restructer the whole call tree of paint(...)?

  2. #2
    Join Date
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    Qt products
    Qt3 Qt4 Qt5
    Platforms
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    Default Re: QPrinter and QPainter do not print to local printer under Windows (QT4)

    I doubt this has anything to do with passing the printer by reference, but you could try passing it by pointer.

    Cheers,
    _

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