QTextItem 类

The QTextItem class provides all the information required to draw text in a custom paint engine. 更多...

头：	#include <QTextItem>
qmake:	QT += gui

所有成员列表，包括继承成员

公共类型

enum	RenderFlag { RightToLeft, Overline, Underline, StrikeOut }
flags	RenderFlags

公共函数

qreal	ascent () const
qreal	descent () const
QFont	font () const
QTextItem::RenderFlags	renderFlags () const
QString	text () const
qreal	width () const

详细描述

The QTextItem class provides all the information required to draw text in a custom paint engine.

When you reimplement your own paint engine, you must reimplement QPaintEngine::drawTextItem (), a function that takes a QTextItem as one of its arguments.

成员类型文档编制

enum QTextItem:: RenderFlag
flags QTextItem:: RenderFlags

常量	值	描述
`QTextItem::RightToLeft`	`0x1`	Render the text from right to left.
`QTextItem::Overline`	`0x10`	Paint a line above the text.
`QTextItem::Underline`	`0x20`	Paint a line under the text.
`QTextItem::StrikeOut`	`0x40`	Paint a line through the text.

RenderFlags 类型是 typedef 对于 QFlags <RenderFlag>。它存储 RenderFlag 值的 OR 组合。

成员函数文档编制

qreal QTextItem:: ascent () const

相当于 ascent of the piece of text that is drawn.

qreal QTextItem:: descent () const

相当于 descent of the piece of text that is drawn.

QFont QTextItem:: font () const

Returns the font that should be used to draw the text.

QTextItem::RenderFlags QTextItem:: renderFlags () const

Returns the render flags used.

QString QTextItem:: text () const

Returns the text that should be drawn.

qreal QTextItem:: width () const

Specifies the total width of the text to be drawn.

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