內容

• 公共函數
• 重實現公共函數
• 信號
• 靜態公共成員
• 詳細描述

QPrintPreviewDialog 類

The QPrintPreviewDialog class provides a dialog for previewing and configuring page layouts for printer output. 更多...

頭：	#include <QPrintPreviewDialog>
qmake:	QT += printsupport
Since:	Qt 4.4
繼承：	QDialog

• 所有成員列錶，包括繼承成員
• 過時成員

公共函數

	QPrintPreviewDialog (QPrinter * printer , QWidget * parent = nullptr, Qt::WindowFlags flags = Qt::WindowFlags())
	QPrintPreviewDialog (QWidget * parent = nullptr, Qt::WindowFlags flags = Qt::WindowFlags())
virtual	~QPrintPreviewDialog ()
void	open (QObject * receiver , const char * member )
QPrinter *	printer ()

重實現公共函數

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

• 8 公共函數繼承自 QDialog
• 216 公共函數繼承自 QWidget
• 31 公共函數繼承自 QObject
• 14 公共函數繼承自 QPaintDevice

信號

void	paintRequested (QPrinter * printer )

• 3 信號繼承自 QDialog
• 3 信號繼承自 QWidget
• 2 信號繼承自 QObject

靜態公共成員

const QMetaObject

staticMetaObject

• 5 靜態公共成員繼承自 QWidget
• 9 靜態公共成員繼承自 QObject

額外繼承成員

• 2 特性繼承自 QDialog
• 59 特性繼承自 QWidget
• 1 特性繼承自 QObject
• 5 公共槽繼承自 QDialog
• 19 公共槽繼承自 QWidget
• 1 公共槽繼承自 QObject
• 6 保護函數繼承自 QDialog
• 35 保護函數繼承自 QWidget
• 9 保護函數繼承自 QObject
• 1 保護函數繼承自 QPaintDevice
• 1 保護槽繼承自 QWidget

詳細描述

The QPrintPreviewDialog class provides a dialog for previewing and configuring page layouts for printer output.

使用 QPrintPreviewDialog in your existing application is straightforward:

1. 創建 QPrintPreviewDialog .

   You can construct a QPrintPreviewDialog with an existing QPrinter object, or you can have QPrintPreviewDialog create one for you, which will be the system default printer.

2. Connect the paintRequested () signal to a slot.

   When the dialog needs to generate a set of preview pages, the paintRequested () signal will be emitted. You can use the exact same code for the actual printing as for having the preview generated, including calling QPrinter::newPage () to start a new page in the preview. Connect a slot to the paintRequested () signal, where you draw onto the QPrinter object that is passed into the slot.

3. 調用 exec ().

   調用 QPrintPreviewDialog::exec () to show the preview dialog.

另請參閱 QPrinter , QPrintDialog , QPageSetupDialog ，和 QPrintPreviewWidget .

成員函數文檔編製

QPrintPreviewDialog:: QPrintPreviewDialog ( QPrinter * printer , QWidget * parent = nullptr, Qt::WindowFlags flags = Qt::WindowFlags())

構造 QPrintPreviewDialog 基於 printer 和采用 parent as the parent widget. The widget flags flags 被傳遞給 QWidget 構造函數。

另請參閱 QWidget::setWindowFlags ().

QPrintPreviewDialog:: QPrintPreviewDialog ( QWidget * parent = nullptr, Qt::WindowFlags flags = Qt::WindowFlags())

這是重載函數。

This will create an internal QPrinter object, which will use the system default printer.

[虛擬] QPrintPreviewDialog:: ~QPrintPreviewDialog ()

銷毀 QPrintPreviewDialog .

[override virtual] void QPrintPreviewDialog:: done ( int result )

重實現自 QDialog::done ().

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

這是重載函數。

Opens the dialog and connects its finished(int) signal to the slot specified by receiver and member .

將從槽斷開信號連接，當關閉對話框時。

該函數在 Qt 4.5 引入。

[signal] void QPrintPreviewDialog:: paintRequested ( QPrinter * printer )

此信號發射，當 QPrintPreviewDialog needs to generate a set of preview pages.

The printer instance supplied is the paint device onto which you should paint the contents of each page, using the QPrinter instance in the same way as you would when printing directly.

QPrinter *QPrintPreviewDialog:: printer ()

返迴指針指嚮 QPrinter object this dialog is currently operating on.

[override virtual] void QPrintPreviewDialog:: setVisible ( bool visible )

重實現自 QDialog::setVisible ().