内容

• 公共函数
• 静态公共成员
• 详细描述

QPrinterInfo 类

The QPrinterInfo class gives access to information about existing printers. 更多...

头：	#include <QPrinterInfo>
Since:	Qt 4.4

• 所有成员列表，包括继承成员

公共函数

	QPrinterInfo ()
	QPrinterInfo (const QPrinterInfo & other )
	QPrinterInfo (const QPrinter & printer )
	~QPrinterInfo ()
bool	isDefault () const
bool	isNull () const
QString	printerName () const
QList<QPrinter::PaperSize>	supportedPaperSizes () const
QPrinterInfo &	operator= (const QPrinterInfo & other )

静态公共成员

QList<QPrinterInfo>	availablePrinters ()
QPrinterInfo	defaultPrinter ()

详细描述

The QPrinterInfo class gives access to information about existing printers.

使用静态函数以生成列表为 QPrinterInfo 对象。每个 QPrinterInfo object in the list represents a single printer and can be queried for name, supported paper sizes, and whether or not it is the default printer.

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QPrinterInfo:: QPrinterInfo ()

构造空的 QPrinterInfo 对象。

另请参阅 isNull ().

QPrinterInfo:: QPrinterInfo (const QPrinterInfo & other )

构造副本为 other .

该函数在 Qt 4.8 引入。

QPrinterInfo:: QPrinterInfo (const QPrinter & printer )

构造 QPrinterInfo 对象从 printer .

QPrinterInfo:: ~QPrinterInfo ()

销毁 QPrinterInfo object. References to the values in the object become invalid.

[static] QList < QPrinterInfo > QPrinterInfo:: availablePrinters ()

Returns a list of available printers on the system.

[static] QPrinterInfo QPrinterInfo:: defaultPrinter ()

Returns the default printer on the system.

The return value should be checked using isNull () before being used, in case there is no default printer.

另请参阅 isNull ().

bool QPrinterInfo:: isDefault () const

Returns whether this printer is the default printer.

bool QPrinterInfo:: isNull () const

Returns whether this QPrinterInfo object holds a printer definition.

空 QPrinterInfo object could result for example from calling defaultPrinter () when there are no printers on the system.

QString QPrinterInfo:: printerName () const

Returns the name of the printer.

另请参阅 QPrinter::setPrinterName ().

QList < QPrinter::PaperSize > QPrinterInfo:: supportedPaperSizes () const

Returns a list of supported paper sizes by the printer.

Not all printer drivers support this query, so the list may be empty. On Mac OS X 10.3, this function always returns an empty list.

该函数在 Qt 4.4 引入。

QPrinterInfo & QPrinterInfo:: operator= (const QPrinterInfo & other )

设置 QPrinterInfo 对象等于 other .

该函数在 Qt 4.8 引入。