PySide.QtGui.QStyleOptionProgressBarV2 class is used to describe the parameters necessary for drawing a progress bar in Qt 4.1 or above.
An instance of this class has type SO_ProgressBar and version 2.
The type is used internally by PySide.QtGui.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 PySide.QtGui.QStyleOption subclass and your own styles. The version is used by PySide.QtGui.QStyleOption subclasses to implement extensions without breaking compatibility. If you use qstyleoption_cast() , you normally do not need to check it.
If you create your own PySide.QtGui.QStyle subclass, you should handle both PySide.QtGui.QStyleOptionProgressBar and PySide.QtGui.QStyleOptionProgressBarV2 . One way to achieve this is to use the PySide.QtGui.QStyleOptionProgressBarV2 copy constructor. For example:
if isinstance(option, QStyleOptionProgressBarV2):
progressBarV2 = QStyleOptionProgressBarV2(option)
# draw the progress bar using progressBarV2
In the example above: If the progressBarOption ‘s version is 1, the extra members ( orientation , invertedAppearance ，和 bottomToTop ) are set to default values for progressBarV2 。若 progressBarOption ‘s version is 2, the constructor will simply copy the extra members to progressBarV2.
对于可以如何使用样式选项的演示范例，见 样式 范例。
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构造 PySide.QtGui.QStyleOptionProgressBarV2 , initializing he members variables to their default values.
构造副本为 other style option which can be either of the PySide.QtGui.QStyleOptionProgressBar and PySide.QtGui.QStyleOptionProgressBarV2 类型。
若 other style option's version is 1, the extra members ( orientation , invertedAppearance ，和 bottomToTop ) are set to default values for the new style option. If other ‘s version is 2, the extra members are simply copied.
另请参阅
version
构造副本为 other 样式选项。
This enum is used to hold information about the version of the style option, and is defined for each PySide.QtGui.QStyleOption 子类。
| 常量 | 描述 |
|---|---|
| QStyleOptionProgressBarV2.Version | 2 |
The version is used by PySide.QtGui.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
QStyleOptionProgressBarV2.StyleOptionType
This enum is used to hold information about the type of the style option, and is defined for each PySide.QtGui.QStyleOption 子类。
| 常量 | 描述 |
|---|---|
| QStyleOptionProgressBarV2.Type | The type of style option provided ( SO_ProgressBar for this class). |
The type is used internally by PySide.QtGui.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 PySide.QtGui.QStyleOption subclass and your own styles.
另请参阅
QStyleOptionProgressBarV2.StyleOptionVersion