QQuickItemGrabResult Class

QQuickItemGrabResult contains the result from QQuickItem::grabToImage (). 更多...

头：	#include <QQuickItemGrabResult>
qmake:	QT += quick
实例化：	ItemGrabResult
继承：	QObject

所有成员列表，包括继承成员

特性

image : const QImage
url : const QUrl

1 特性继承自 QObject

公共函数

QImage	image () const
bool	saveToFile (const QString & fileName ) const
QUrl	url () const

32 公共函数继承自 QObject

信号

void	ready ()

2 信号继承自 QObject

额外继承成员

1 公共槽继承自 QObject
11 静态公共成员继承自 QObject
9 保护函数继承自 QObject

详细描述

QQuickItemGrabResult contains the result from QQuickItem::grabToImage ().

另请参阅 QQuickItem::grabToImage ().

特性文档编制

image : const QImage

This property holds the pixel results from a grab.

If the grab is not yet complete or if it failed, an empty image is returned.

访问函数：

QImage image () const

url : const QUrl

This property holds a URL which can be used in conjunction with URL based image consumers, such as the QtQuick::Image 类型。

The URL is valid until the QQuickItemGrabResult object is deleted.

The URL does not represent a valid file or location to read it from, it is primarily a key to access images through Qt Quick's image-based types.

访问函数：

QUrl	url () const

成员函数文档编制

`[signal]` void QQuickItemGrabResult:: ready ()

This signal is emitted when the grab has completed.

bool QQuickItemGrabResult:: saveToFile (const QString & fileName ) const

Saves the grab result as an image to fileName . Returns true if successful; otherwise returns false.

注意： In Qt versions prior to 5.9, this function is marked as non- const .

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