QPrintEngine 类定义接口用于如何 QPrinter 交互与给定打印子系统。 更多...
| 头： | #include <QPrintEngine> |
| CMake: |
find_package(Qt6 COMPONENTS PrintSupport REQUIRED)
target_link_libraries(mytarget PRIVATE Qt6::PrintSupport) |
| qmake: | QT += printsupport |
注意： 此类的所有函数 可重入 .
| enum | PrintEnginePropertyKey { PPK_CollateCopies, PPK_ColorMode, PPK_Creator, PPK_Duplex, PPK_DocumentName, …, PPK_CustomBase } |
| virtual | ~QPrintEngine () |
| virtual bool | abort () = 0 |
| virtual int | metric (QPaintDevice::PaintDeviceMetric id ) const = 0 |
| virtual bool | newPage () = 0 |
| virtual QPrinter::PrinterState | printerState () const = 0 |
| virtual QVariant | property (QPrintEngine::PrintEnginePropertyKey key ) const = 0 |
| virtual void | setProperty (QPrintEngine::PrintEnginePropertyKey key , const QVariant & value ) = 0 |
The common case when creating your own print engine is to derive from both QPaintEngine and QPrintEngine. Various properties of a print engine are given with property () 和设置采用 setProperty ().
另请参阅 QPaintEngine .
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.
| 常量 | 值 | 描述 |
|---|---|---|
QPrintEngine::PPK_CollateCopies
|
0
|
A boolean value indicating whether the printout should be collated or not. |
QPrintEngine::PPK_ColorMode
|
1
|
Refers to QPrinter::ColorMode , either color or monochrome. |
QPrintEngine::PPK_Creator
|
2
|
A string describing the document's creator. |
QPrintEngine::PPK_Duplex
|
20
|
A boolean value indicating whether both sides of the printer paper should be used for the printout. |
QPrintEngine::PPK_DocumentName
|
3
|
A string describing the document name in the spooler. |
QPrintEngine::PPK_FontEmbedding
|
19
|
A boolean value indicating whether data for the document's fonts should be embedded in the data sent to the printer. |
QPrintEngine::PPK_FullPage
|
4
|
A boolean describing if the printer should be full page or not. |
QPrintEngine::PPK_NumberOfCopies
|
5
|
Obsolete. An integer specifying the number of copies. Use PPK_CopyCount instead. |
QPrintEngine::PPK_Orientation
|
6
|
Specifies a QPageLayout::Orientation 值。 |
QPrintEngine::PPK_OutputFileName
|
7
|
The output file name as a string. An empty file name indicates that the printer should not print to a file. |
QPrintEngine::PPK_PageOrder
|
8
|
Specifies a QPrinter::PageOrder 值。 |
QPrintEngine::PPK_PageRect
|
9
|
A QRect specifying the page rectangle |
QPrintEngine::PPK_PageSize
|
10
|
Obsolete. Use PPK_PaperSize instead. |
QPrintEngine::PPK_PaperRect
|
11
|
A QRect specifying the paper rectangle. |
QPrintEngine::PPK_PaperSource
|
12
|
Specifies a QPrinter::PaperSource 值。 |
QPrintEngine::PPK_PaperSources
|
21
|
Specifies more than one QPrinter::PaperSource 值。 |
QPrintEngine::PPK_PaperName
|
26
|
A string specifying the name of the paper. |
QPrintEngine::PPK_PaperSize
|
PPK_PageSize
|
Specifies a QPrinter::PaperSize 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
|
|
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. |
QPrintEngine::PPK_CustomPaperSize
|
22
|
A QSizeF specifying a custom paper size in the QPrinter::Point unit. |
QPrintEngine::PPK_PageMargins
|
23
|
A QList < QVariant > containing the left, top, right and bottom margin values in the QPrinter::Point unit. |
QPrintEngine::PPK_CopyCount
|
24
|
An integer specifying the number of copies to print. |
QPrintEngine::PPK_SupportsMultipleCopies
|
25
|
A boolean value indicating whether or not the printer supports printing multiple copies in one job. |
QPrintEngine::PPK_QPageSize
|
27
|
Set the page size using a QPageSize 对象。 |
QPrintEngine::PPK_QPageMargins
|
28
|
Set the page margins using a QPair of QMarginsF and QPageLayout::Unit . |
QPrintEngine::PPK_QPageLayout
|
29
|
Set the page layout using a QPageLayout 对象。 |
QPrintEngine::PPK_CustomBase
|
0xff00
|
Basis for extension. |
[虚拟]
QPrintEngine::
~QPrintEngine
()
Destroys the print engine.
[pure virtual]
bool
QPrintEngine::
abort
()
Instructs the print engine to abort the printing process. Returns true if successful; otherwise returns
false
.
[pure virtual]
int
QPrintEngine::
metric
(
QPaintDevice::PaintDeviceMetric
id
) const
Returns the metric for the given id .
[pure virtual]
bool
QPrintEngine::
newPage
()
Instructs the print engine to start a new page. Returns
true
if the printer was able to create the new page; otherwise returns
false
.
[pure virtual]
QPrinter::PrinterState
QPrintEngine::
printerState
() const
Returns the current state of the printer being used by the print engine.
[pure virtual]
QVariant
QPrintEngine::
property
(
QPrintEngine::PrintEnginePropertyKey
key
) const
Returns the print engine's property specified by key .
另请参阅 setProperty ().
[pure virtual]
void
QPrintEngine::
setProperty
(
QPrintEngine::PrintEnginePropertyKey
key
, const
QVariant
&
value
)
Sets the print engine's property specified by key 到给定 value .
另请参阅 property ().