QStyleOptionSpinBox Class
The QStyleOptionSpinBox class is used to describe the parameters necessary for drawing a spin box. 更多...
| 头文件: | #include <QStyleOptionSpinBox> |
| qmake: | QT += widgets |
| 基类: | QStyleOptionComplex |
公有类型
| enum | StyleOptionType { Type } |
| enum | StyleOptionVersion { Version } |
公有函数
| QStyleOptionSpinBox() | |
| QStyleOptionSpinBox(const QStyleOptionSpinBox &other) |
- 2 个公有函数继承自 QStyleOption
公有变量
| QAbstractSpinBox::ButtonSymbols | buttonSymbols |
| bool | frame |
| QAbstractSpinBox::StepEnabled | stepEnabled |
- 2 个公有变量继承自 QStyleOptionComplex
- 8 个公有变量继承自 QStyleOption
详细描述
The QStyleOptionSpinBox class is used to describe the parameters necessary for drawing a spin box.
QStyleOptionSpinBox contains all the information that QStyle functions need to draw QSpinBox and QDateTimeEdit.
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 QStyleOptionComplex.
成员类型
enum QStyleOptionSpinBox::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 |
|---|---|---|
QStyleOptionSpinBox::Type | SO_SpinBox | The type of style option provided (SO_SpinBox 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 QStyleOptionSpinBox::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 |
|---|---|---|
QStyleOptionSpinBox::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
QStyleOptionSpinBox::QStyleOptionSpinBox()
Constructs a QStyleOptionSpinBox, initializing the members variables to their default values.
QStyleOptionSpinBox::QStyleOptionSpinBox(const QStyleOptionSpinBox &other)
Constructs a copy of the other style option.
成员变量
QAbstractSpinBox::ButtonSymbols QStyleOptionSpinBox::buttonSymbols
This variable holds the type of button symbols to draw for the spin box
The default value is QAbstractSpinBox::UpDownArrows specufying little arrows in the classic style.
参见 QAbstractSpinBox::ButtonSymbols.
bool QStyleOptionSpinBox::frame
This variable holds whether the spin box has a frame
The default value is false, i.e. the spin box has no frame.
QAbstractSpinBox::StepEnabled QStyleOptionSpinBox::stepEnabled
This variable holds which buttons of the spin box that are enabled
The default value is QAbstractSpinBox::StepNone.