QStyleOptionTabV3 Class Reference
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The QStyleOptionTabV3 class is used to describe the parameters necessary for drawing a tabs in Qt 4.5 or above. 更多...

继承 QStyleOptionTabV2 .

类型

enum StyleOptionVersion { Version }

方法

__init__ ( self )
__init__ ( self , QStyleOptionTabV3 other )
__init__ ( self , QStyleOptionTabV2 other )
__init__ ( self , QStyleOptionTab other )

Members

bool documentMode
QSize leftButtonSize
QSize rightButtonSize

详细描述

The QStyleOptionTabV3 class is used to describe the parameters necessary for drawing a tabs in Qt 4.5 or above.

An instance of the QStyleOptionTabV3 class has type SO_Tab and version 3. 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. The version is used by QStyleOption subclasses to implement extensions without breaking compatibility. 若使用 qstyleoption_cast (), you normally do not need to check it.

If you create your own QStyle subclass, you should handle both QStyleOptionTab , QStyleOptionTabV2 and QStyleOptionTabV3. One way to achieve this is to use the QStyleOptionTabV3 copy constructor. For example:

     if (const QStyleOptionTab *tabOption =
            qstyleoption_cast<const QStyleOptionTab *>(option)) {
         QStyleOptionTabV2 tabV2(*tabOption);
         // draw the tab using tabV2
    }

In the example above: If tabOption 's version is 1, the extra member ( iconSize ) will be set to an invalid size for tabV2 。若 tabOption 's version is 2, the constructor will simply copy the tab 's iconSize .

For an example demonstrating how style options can be used, see the 样式范例。

类型文档编制

QStyleOptionTabV3.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
`QStyleOptionTabV3.Version`	`3`	3

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 .

方法文档编制

QStyleOptionTabV3.init ( self )

构造 QStyleOptionTabV3 .

QStyleOptionTabV3.init ( self , QStyleOptionTabV3 other )

构造副本为 other 样式选项。

QStyleOptionTabV3.init ( self , QStyleOptionTabV2 other )

构造副本为 other 样式选项。

QStyleOptionTabV3.init ( self , QStyleOptionTab other )

构造 QStyleOptionTabV3 copy of the other style option which can be either of the QStyleOptionTabV3 , QStyleOptionTabV2 or QStyleOptionTab 类型。

If the other style option's version is 1 or 2, the new style option's leftButtonSize and rightButtonSize is set to an invalid value. If its version is 3, its leftButtonSize and rightButtonSize values are simply copied to the new style option.

Member Documentation

bool documentMode

This variable holds whether the tabbar is in document mode.

默认值为 false；

QSize leftButtonSize

This variable holds the size for the left widget on the tab.

默认值为 QSize (-1, -1), i.e. an invalid size;

QSize rightButtonSize

This variable holds the size for the right widget on the tab.