23    -    QtPrintSupport    -    Qt PrintSupport module provides classes to make printing easier and portable
    QAbstractPrintDialog    -    Base implementation for print dialogs used to configure printers
    QPageSetupDialog    -    Configuration dialog for the page-related options on a printer
    QPrintDialog    -    Dialog for specifying the printer‘s configuration
    QPrintEngine    -    Defines an interface for how QPrinter interacts with a given printing subsystem
    QPrintPreviewDialog    -    Dialog for previewing and configuring page layouts for printer output
    QPrintPreviewWidget    -    Widget for previewing page layouts for printer output
    QPrinter    -    Paint device that paints on a printer
    QPrinterInfo    -    Gives access to information about existing printers

QT学习-核心类列表-23、QtPrintSupport