|  | Home · All Classes · Main Classes · Annotated · Grouped Classes · Functions |

# QPrintEngine Class Reference

The QPrintEngine class defines an interface for how QPrinter interacts with a given printing subsystem. More...

    #include <QPrintEngine>

Part of the QtGui module.

- List of all members, including inherited members

### Public Types

- enum PrintEnginePropertyKey { PPK_CollateCopies, PPK_ColorMode, PPK_Creator, PPK_DocumentName, ..., PPK_CustomBase }

### Public Functions

- virtual ~QPrintEngine ()
- virtual bool abort () = 0
- virtual HDC getPrinterDC () const
- virtual int metric ( QPaintDevice::PaintDeviceMetric ) const = 0
- virtual bool newPage () = 0
- virtual QPrinter::PrinterState printerState () const = 0
- virtual QVariant property ( PrintEnginePropertyKey key ) const = 0
- virtual void releasePrinterDC ( HDC ) const
- virtual void setProperty ( PrintEnginePropertyKey key, const QVariant & value ) = 0

## Detailed Description

The QPrintEngine class defines an interface for how QPrinter interacts with a given printing subsystem.

The common use is to derive from both QPaintEngine and QPrintEngine when implementing a new printer.

See also QPaintEngine.

## Member Type Documentation

### enum QPrintEngine::PrintEnginePropertyKey

This enum is used to communicate properties between the print engine and QPrinter. A property may or may not be supported by a given print engine.

Constant | Value | Description
--- | --- | ---
`QPrintEngine::PPK_CollateCopies` | `0` | A bool value describing wether the printout should be collated or not.
`QPrintEngine::PPK_ColorMode` | `1` | Refers to QPrinter::ColorMode, either color or monochrome.
`QPrintEngine::PPK_Creator` | `2` |

Constant | Value | Description
--- | --- | ---
`QPrintEngine::PPK_DocumentName` | `3` | A string describing the document name in the spooler.
`QPrintEngine::PPK_FullPage` | `4` | A boolean describing if the printer should be full page or not.
`QPrintEngine::PPK_NumberOfCopies` | `5` | An integer specifying the number of copies
`QPrintEngine::PPK_Orientation` | `6` | Specifies a QPrinter::Orientation value.
`QPrintEngine::PPK_OutputFileName` | `7` | The output file name as a string. An empty file name indicates that we do not print to file.
`QPrintEngine::PPK_PageOrder` | `8` | Specifies a QPrinter::PageOrder value.
`QPrintEngine::PPK_PageRect` | `9` | A QRect specifying the page rectangle
`QPrintEngine::PPK_PageSize` | `10` | Specifies a QPrinter::PageSize value.
`QPrintEngine::PPK_PaperRect` | `11` | A QRect specifying the paper rectangle.
`QPrintEngine::PPK_PaperSource` | `12` | Specifies a QPrinter::PaperSource value.
`QPrintEngine::PPK_PrinterName` | `13` | A string specifying the name of the printer.
`QPrintEngine::PPK_PrinterProgram` | `14` | A string specifying the name of the printer program used for printing,
`QPrintEngine::PPK_Resolution` | `15` | An integer describing the dots per inch for this printer.
`QPrintEngine::PPK_SelectionOption` | `16` |

Constant | Value | Description
--- | --- | ---
`QPrintEngine::PPK_SupportedResolutions` | `17` | A list of integer QVariants describing the set of supported resolutions that the printer has.
`QPrintEngine::PPK_WindowsPageSize` | `18` | An integer specifying a DM_PAPER entry on Windows(tm).
`QPrintEngine::PPK_CustomBase` | `0xff00` | Basis for extension.

## Member Function Documentation

### QPrintEngine::~QPrintEngine () `[virtual]`

### bool QPrintEngine::abort () `[pure virtual]`

### HDC QPrintEngine::getPrinterDC () const `[virtual]`

### int QPrintEngine::metric ( QPaintDevice::PaintDeviceMetric ) const `[pure virtual]`

### bool QPrintEngine::newPage () `[pure virtual]`

### QPrinter::PrinterState QPrintEngine::printerState () const `[pure virtual]`

### QVariant QPrintEngine::property ( PrintEnginePropertyKey key ) const `[pure virtual]`

### void QPrintEngine::releasePrinterDC ( HDC ) const `[virtual]`

### void QPrintEngine::setProperty ( PrintEnginePropertyKey key, const QVariant & value ) `[pure virtual]`