QTextItem 类

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
RenderFlags	renderFlags () const
QString	text () const
qreal	width () const

详细描述

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.

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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