QStyleOptionFrameV2 Class Reference
^{^{[

QtGui

module]}}

The QStyleOptionFrameV2 class is used to describe the parameters necessary for drawing a frame in Qt 4.1 or above. 更多...

继承 QStyleOptionFrame .

Inherited by QStyleOptionFrameV3 .

类型

enum FrameFeature { None, Flat }
class FrameFeatures
enum StyleOptionVersion { Version }

方法

__init__ ( self )
__init__ ( self , QStyleOptionFrameV2 other )
__init__ ( self , QStyleOptionFrame other )

Members

FrameFeatures features

详细描述

The QStyleOptionFrameV2 class is used to describe the parameters necessary for drawing a frame in Qt 4.1 or above.

QStyleOptionFrameV2 inherits QStyleOptionFrame which is used for drawing several built-in Qt widgets, including QFrame , QGroupBox , QLineEdit ，和 QMenu .

An instance of the QStyleOptionFrameV2 class has type SO_Frame and version 2. 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 QStyleOptionFrame and QStyleOptionFrameV2. One way to achieve this is to use the QStyleOptionFrameV2 copy constructor. For example:

     QStyleOptionFrame *option;
     if (const QStyleOptionFrame *frameOption =
            qstyleoption_cast<const QStyleOptionFrame *>(option)) {
         QStyleOptionFrameV2 frameOptionV2(*frameOption);
         // draw the frame using frameOptionV2
     }

In the example above: If the frameOption 's version is 1, FrameFeature is 设为 None for frameOptionV2 。若 frameOption 's version is 2, the constructor will simply copy the frameOption 's FrameFeature 值。

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

类型文档编制

QStyleOptionFrameV2.FrameFeature

This enum describes the different types of features a frame can have.

常量	值	描述
`QStyleOptionFrameV2.None`	`0x00`	Indicates a normal frame.
`QStyleOptionFrameV2.Flat`	`0x01`	Indicates a flat frame.

The FrameFeatures type is a typedef for QFlags <FrameFeature>. It stores an OR combination of FrameFeature values.

QStyleOptionFrameV2.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
`QStyleOptionFrameV2.Version`	`2`	2

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

QStyleOptionFrameV2.init ( self )

构造 QStyleOptionFrameV2 对象。

QStyleOptionFrameV2.init ( self , QStyleOptionFrameV2 other )

构造 QStyleOptionFrameV2 copy of the other 样式选项。

QStyleOptionFrameV2.init ( self , QStyleOptionFrame other )

构造 QStyleOptionFrameV2 copy of the other style option which can be either of the QStyleOptionFrameV2 or QStyleOptionFrame 类型。

若 other style option's version is 1, the new style option's FrameFeature value is set to QStyleOptionFrameV2.None . If its version is 2, its FrameFeature value is simply copied to the new style option.

另请参阅 version .

Member Documentation

FrameFeatures features

This variable holds a bitwise OR of the features that describe this frame.

另请参阅 FrameFeature .

QStyleOptionFrameV2 Class Reference [ QtGui module]

类型

方法