QStyleOptionRubberBand Class
The QStyleOptionRubberBand class is used to describe the parameters needed for drawing a rubber band. 更多...
| 头文件: | #include <QStyleOptionRubberBand> |
| qmake: | QT += widgets |
| 基类: | QStyleOption |
公有类型
| enum | StyleOptionType { Type } |
| enum | StyleOptionVersion { Version } |
公有函数
| QStyleOptionRubberBand() | |
| QStyleOptionRubberBand(const QStyleOptionRubberBand &other) |
- 2 个公有函数继承自 QStyleOption
公有变量
- 8 个公有变量继承自 QStyleOption
详细描述
The QStyleOptionRubberBand class is used to describe the parameters needed for drawing a rubber band.
QStyleOptionRubberBand contains all the information that QStyle functions need to draw QRubberBand.
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.
For an example demonstrating how style options can be used, see the Styles example.
参见 QStyleOption and QRubberBand.
成员类型
enum QStyleOptionRubberBand::StyleOptionType
This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass.
| Constant | Value | Description |
|---|---|---|
QStyleOptionRubberBand::Type | SO_RubberBand | The type of style option provided (SO_RubberBand for this class). |
The type is used internally by QStyleOption, its subclasses, and 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.
enum QStyleOptionRubberBand::StyleOptionVersion
This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass.
| Constant | Value | Description |
|---|---|---|
QStyleOptionRubberBand::Version | 1 | 1 |
The version is used by QStyleOption subclasses to implement extensions without breaking compatibility. If you use qstyleoption_cast(), you normally do not need to check it.
参见 StyleOptionType.
成员函数
QStyleOptionRubberBand::QStyleOptionRubberBand()
Creates a QStyleOptionRubberBand, initializing the members variables to their default values.
QStyleOptionRubberBand::QStyleOptionRubberBand(const QStyleOptionRubberBand &other)
Constructs a copy of the other style option.
成员变量
bool QStyleOptionRubberBand::opaque
This variable holds whether the rubber band is required to be drawn in an opaque style
The default value is true.
QRubberBand::Shape QStyleOptionRubberBand::shape
This variable holds the shape of the rubber band
The default shape is QRubberBand::Line.