QStyleOptionFocusRect 类

The QStyleOptionFocusRect class is used to describe the parameters for drawing a focus rectangle with QStyle . 更多...

头：	#include <QStyleOptionFocusRect>
qmake:	QT += widgets
继承：	QStyleOption

公共类型

enum	StyleOptionType { Type }
enum	StyleOptionVersion { Version }

公共函数

	QStyleOptionFocusRect ()
	QStyleOptionFocusRect (const QStyleOptionFocusRect & other )

2 公共函数继承自 QStyleOption

公共变量

QColor

backgroundColor

详细描述

The QStyleOptionFocusRect class is used to describe the parameters for drawing a focus rectangle with QStyle .

For performance reasons, the access to the member variables is direct (i.e., using the . or -> operator). This low-level feel makes the structures straightforward to use and emphasizes that these are simply parameters used by the style functions.

对于可以如何使用样式选项的演示范例，见样式范例。

另请参阅 QStyleOption .

成员类型文档编制

enum QStyleOptionFocusRect:: StyleOptionType

This enum is used to hold information about the type of the style option, and is defined for each QStyleOption 子类。

常量	值	描述
`QStyleOptionFocusRect::Type`	`SO_FocusRect`	提供样式选项的类型 ( SO_FocusRect 对于此类)。

类型内部使用通过 QStyleOption ，其子类，和 qstyleoption_cast () to determine the type of style option. In general you do not need to worry about this unless you want to create your own QStyleOption subclass and your own styles.

另请参阅 StyleOptionVersion .

enum QStyleOptionFocusRect:: StyleOptionVersion

This enum is used to hold information about the version of the style option, and is defined for each QStyleOption 子类。

常量	值	描述
`QStyleOptionFocusRect::Version`	`1`	1

版本的使用通过 QStyleOption 子类以实现扩展在不破坏兼容性的情况下。若使用 qstyleoption_cast ()，通常不需要校验它。

另请参阅 StyleOptionType .

成员函数文档编制

QStyleOptionFocusRect:: QStyleOptionFocusRect ()

构造 QStyleOptionFocusRect , initializing the members variables to their default values.

QStyleOptionFocusRect:: QStyleOptionFocusRect (const QStyleOptionFocusRect & other )

构造副本为 other 样式选项。

成员变量文档编制

QColor QStyleOptionFocusRect:: backgroundColor

This variable holds the background color on which the focus rectangle is being drawn

The default value is an invalid color with the RGB value (0, 0, 0). An invalid color is a color that is not properly set up for the underlying window system.