QTextItem 類

QTextItem 類提供在自定義描繪引擎中描繪文本所需的所有信息。更多...

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

所有成員列錶，包括繼承成員

公共類型

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

公共函數

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

詳細描述

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

成員類型文檔編製

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 類型是 typedef 對於 QFlags <RenderFlag>。它存儲 RenderFlag 值的 OR 組閤。

成員函數文檔編製

qreal QTextItem:: ascent () const

相當於 ascent of the piece of text that is drawn.

qreal QTextItem:: descent () const

相當於 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.