内容

公共类型
公共函数
公共变量
详细描述

QStyleOptionToolBar 类

The QStyleOptionToolBar class is used to describe the parameters for drawing a toolbar. 更多...

头：	#include <QStyleOptionToolBar>
qmake:	QT += widgets
Since:	Qt 4.1
继承：	QStyleOption

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公共类型

enum	StyleOptionType { Type }
enum	StyleOptionVersion { Version }
enum	ToolBarFeature { None, Movable }
flags	ToolBarFeatures
enum	ToolBarPosition { Beginning, Middle, End, OnlyOne }

公共函数

	QStyleOptionToolBar ()
	QStyleOptionToolBar (const QStyleOptionToolBar & other )

2 公共函数继承自 QStyleOption

公共变量

ToolBarFeatures	features
int	lineWidth
int	midLineWidth
ToolBarPosition	positionOfLine
ToolBarPosition	positionWithinLine
Qt::ToolBarArea	toolBarArea

8 public variables inherited from QStyleOption

详细描述

The QStyleOptionToolBar class is used to describe the parameters for drawing a toolbar.

QStyleOptionToolBar contains all the information that QStyle 函数需要绘制 QToolBar .

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.

The QStyleOptionToolBar class holds the lineWidth 和 midLineWidth for drawing the widget. It also stores information about which area the toolbar should be located in, whether it is movable or not, which position the toolbar line should have ( positionOfLine ), and the toolbar's position within the line ( positionWithinLine ).

In addition, the class provides a couple of enums: The ToolBarFeature enum is used to describe whether a toolbar is movable or not, and the ToolBarPosition enum is used to describe the position of a toolbar line, as well as the toolbar's position within the line.

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 QStyleOptionToolBar:: 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
`QStyleOptionToolBar::Type`	`SO_ToolBar`	提供样式选项的类型 ( SO_ToolBar 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 QStyleOptionToolBar:: 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
`QStyleOptionToolBar::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 .

enum QStyleOptionToolBar:: ToolBarFeature
flags QStyleOptionToolBar:: ToolBarFeatures

This enum is used to describe whether a toolbar is movable or not.

常量	值	描述
`QStyleOptionToolBar::None`	`0x0`	The toolbar cannot be moved. The default value.
`QStyleOptionToolBar::Movable`	`0x1`	The toolbar is movable, and a handle will appear when holding the cursor over the toolbar's boundary.

The ToolBarFeatures type is a typedef for QFlags <ToolBarFeature>. It stores an OR combination of ToolBarFeature values.

另请参阅 features and QToolBar::isMovable ().

enum QStyleOptionToolBar:: ToolBarPosition

This enum is used to describe the position of a toolbar line, as well as the toolbar's position within the line.

The order of the positions within a line starts at the top of a vertical line, and from the left within a horizontal line. The order of the positions for the lines is always from the parent widget's boundary edges.

常量	值	描述
`QStyleOptionToolBar::Beginning`	`0`	The toolbar is located at the beginning of the line, or the toolbar line is the first of several lines. There can only be one toolbar (and only one line) with this position.
`QStyleOptionToolBar::Middle`	`1`	The toolbar is located in the middle of the line, or the toolbar line is in the middle of several lines. There can several toolbars (and lines) with this position.
`QStyleOptionToolBar::End`	`2`	The toolbar is located at the end of the line, or the toolbar line is the last of several lines. There can only be one toolbar (and only one line) with this position.
`QStyleOptionToolBar::OnlyOne`	`3`	There is only one toolbar or line. This is the default value of the positionOfLine and positionWithinLine 变量。

另请参阅 positionWithinLine and positionOfLine .

成员函数文档编制

QStyleOptionToolBar:: QStyleOptionToolBar ()

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

QStyleOptionToolBar:: QStyleOptionToolBar (const QStyleOptionToolBar & other )

构造副本为 other 样式选项。

成员变量文档编制

ToolBarFeatures QStyleOptionToolBar:: features

This variable holds whether the toolbar is movable or not.

默认值为 None .

int QStyleOptionToolBar:: lineWidth

This variable holds the line width for drawing the toolbar.

默认值为 0。

int QStyleOptionToolBar:: midLineWidth

This variable holds the mid-line width for drawing the toolbar.

默认值为 0。

ToolBarPosition QStyleOptionToolBar:: positionOfLine

This variable holds the position of the toolbar line.

默认值为 QStyleOptionToolBar::OnlyOne .

ToolBarPosition QStyleOptionToolBar:: positionWithinLine

This variable holds the position of the toolbar within a line.