QPrintDialog 类

QPrintDialog 类提供用于指定打印机配置的对话框。更多...

头：	#include <QPrintDialog>
CMake:	find_package(Qt6 REQUIRED COMPONENTS PrintSupport) target_link_libraries(mytarget PRIVATE Qt6::PrintSupport)
qmake:	QT += printsupport
继承：	QAbstractPrintDialog

所有成员列表，包括继承成员
QPrintDialog is part of 标准对话框 and 打印机和打印 API .

特性

options : PrintDialogOptions

公共函数

	QPrintDialog (QPrinter * printer , QWidget * parent = nullptr)
	QPrintDialog (QWidget * parent = nullptr)
virtual	~QPrintDialog ()
void	open (QObject * receiver , const char * member )
QAbstractPrintDialog::PrintDialogOptions	options () const
QPrinter *	printer ()
void	setOption (QAbstractPrintDialog::PrintDialogOption option , bool on = true)
void	setOptions (QAbstractPrintDialog::PrintDialogOptions options )
bool	testOption (QAbstractPrintDialog::PrintDialogOption option ) const

重实现公共函数

virtual void	done (int result ) override
virtual int	exec () override
virtual void	setVisible (bool visible ) override

信号

void	accepted (QPrinter * printer )

详细描述

The dialog allows users to change document-related settings, such as the paper size and orientation, type of print (color or grayscale), range of pages, and number of copies to print.

Controls are also provided to enable users to choose from the printers available, including any configured network printers.

Typically, QPrintDialog objects are constructed with a QPrinter object, and executed using the exec () 函数。

QPrintDialog printDialog(printer, parent);
if (printDialog.exec() == QDialog::Accepted) {
    // print ...
}

If the dialog is accepted by the user, the QPrinter object is correctly configured for printing.

The printer dialog (shown above in Plastique style) enables access to common printing properties. On X11 platforms that use the CUPS printing system, the settings for each available printer can be modified via the dialog's Properties push button.

On Windows and macOS, the native print dialog is used, which means that some QWidget and QDialog properties set on the dialog won't be respected. The native print dialog on macOS does not support setting printer options, i.e. setOptions () 和 setOption () have no effect.

In Qt 4.4, it was possible to use the static functions to show a sheet on macOS. This is no longer supported in Qt 4.5. If you want this functionality, use QPrintDialog::open ().

另请参阅 QPageSetupDialog and QPrinter .

特性文档编制

options : PrintDialogOptions

This property holds the various options that affect the look and feel of the dialog

默认情况下，所有选项是被禁用的。

Options should be set before showing the dialog. Setting them while the dialog is visible is not guaranteed to have an immediate effect on the dialog (depending on the option and on the platform).

访问函数：

QAbstractPrintDialog::PrintDialogOptions	options () const
void	setOptions (QAbstractPrintDialog::PrintDialogOptions options )

另请参阅 setOption () 和 testOption ().

成员函数文档编制

`[explicit]` QPrintDialog:: QPrintDialog ( QPrinter * printer , QWidget * parent = nullptr)

Constructs a new modal printer dialog for the given printer 采用给定 parent .

`[explicit]` QPrintDialog:: QPrintDialog ( QWidget * parent = nullptr)

Constructs a print dialog with the given parent .

`[虚拟]` QPrintDialog:: ~QPrintDialog ()

Destroys the print dialog.

`[signal]` void QPrintDialog:: accepted ( QPrinter * printer )

This signal is emitted when the user accepts the values set in the print dialog. The printer parameter includes the printer that the settings were applied to.

`[override virtual]` void QPrintDialog:: done ( int result )

重实现： QDialog::done (int r).

关闭对话框并将其结果代码设为 result 。若此对话框的展示是采用 exec ()，done() 导致本地事件循环的完成，且 exec () 返回 result .

注意： This function does not apply to the Native Print Dialog on the Mac macOS and Windows platforms, because the dialog is required to be modal and only the user can close it.

另请参阅 QDialog::done ().

`[override virtual]` int QPrintDialog:: exec ()

重实现： QDialog::exec ().

void QPrintDialog:: open ( QObject * receiver , const char * member )

这是重载函数。

打开对话框并连接其 accepted () 信号到槽，指定通过 receiver and member .

将从槽断开信号连接，当关闭对话框时。

QPrinter *QPrintDialog:: printer ()

Returns the printer that this printer dialog operates on. This can be useful when using the QPrintDialog::open () 方法。

void QPrintDialog:: setOption ( QAbstractPrintDialog::PrintDialogOption option , bool on = true)

设置给定 option 为被启用若 on 为 true；否则，清零给定 option .

另请参阅 options and testOption ().

`[override virtual]` void QPrintDialog:: setVisible ( bool visible )

重实现： QDialog::setVisible (bool visible).

bool QPrintDialog:: testOption ( QAbstractPrintDialog::PrintDialogOption option ) const

返回 true 若给定 option 被启用；否则，返回 false。

另请参阅 options and setOption ().