The QStyleOptionSlider class is used to describe the parameters needed for drawing a slider. 更多...
继承 QStyleOptionComplex .
The QStyleOptionSlider class is used to describe the parameters needed for drawing a slider.
QStyleOptionSlider contains all the information that QStyle functions need to draw QSlider and QScrollBar .
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 函数。
For an example demonstrating how style options can be used, see the 样式 范例。
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 |
|---|---|---|
| QStyleOptionSlider.Type | SO_Slider | The type of style option provided ( SO_Slider for this class). |
The type is used internally by QStyleOption , its subclasses, and qstyleoption_cast () 到 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 .
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 |
|---|---|---|
| QStyleOptionSlider.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.
另请参阅 StyleOptionType .
构造 QStyleOptionSlider , initializing the members variables to their default values.
构造副本为 other 样式选项。
This variable holds whether the dial should wrap or not.
The default value is false, i.e. the dial is not wrapped.
另请参阅 QDial.wrapping ().
This variable holds the maximum value for the slider.
默认值为 0。
This variable holds the minimum value for the slider.
默认值为 0。
This variable holds the number of pixel between notches.
The default value is 0.0.
另请参阅 QDial.notchTarget ().
This variable holds the slider's orientation (horizontal or vertical).
The default orientation is Qt.Horizontal .
另请参阅 Qt.Orientation .
This variable holds the size of the page step of the slider.
默认值为 0。
另请参阅 QAbstractSlider.pageStep .
This variable holds the size of the single step of the slider.
默认值为 0。
另请参阅 QAbstractSlider.singleStep .
This variable holds the position of the slider handle.
If the slider has active feedback (i.e., QAbstractSlider.tracking is true), this value will be the same as sliderValue . Otherwise, it will have the current position of the handle. The default value is 0.
另请参阅 QAbstractSlider.tracking and sliderValue .
This variable holds the value of the slider.
If the slider has active feedback (i.e., QAbstractSlider.tracking is true), this value will be the same as sliderPosition . Otherwise, it will have the value the slider had before the mouse was pressed.
默认值为 0。
另请参阅 QAbstractSlider.tracking and sliderPosition .
This variable holds the interval that should be drawn between tick marks.
默认值为 0。
This variable holds the position of the slider's tick marks, if any.
默认值为 QSlider.NoTicks .
另请参阅 QSlider.TickPosition .
This variable holds the slider control orientation.
Normally a slider increases as it moves up or to the right; upsideDown indicates that it should do the opposite (increase as it moves down or to the left). The default value is false, i.e. the slider increases as it moves up or to the right.
另请参阅 QStyle.sliderPositionFromValue (), QStyle.sliderValueFromPosition (), and QAbstractSlider.invertedAppearance .
