Qt 4.8: QStyleOptionViewItemV3 Class Reference

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# QStyleOptionViewItemV3 Class Reference

The QStyleOptionViewItemV3 class is used to describe the parameters necessary for drawing a frame in Qt 4.3 or above. More...

     #include <QStyleOptionViewItemV3>

Inherits: QStyleOptionViewItemV2.

Inherited by: QStyleOptionViewItemV4.

This class was introduced in Qt 4.3.

- List of all members, including inherited members

## Public Types

enum | StyleOptionVersion { Version }

## Public Functions

| QStyleOptionViewItemV3 ()
| QStyleOptionViewItemV3 ( const QStyleOptionViewItemV3 & other )
| QStyleOptionViewItemV3 ( const QStyleOptionViewItem & other )
QStyleOptionViewItemV3 & | operator= ( const QStyleOptionViewItem & other )

- 1 public function inherited from QStyleOptionViewItemV2
- 2 public functions inherited from QStyleOption

### Additional Inherited Members

- 1 public variable inherited from QStyleOptionViewItemV2
- 7 public variables inherited from QStyleOptionViewItem
- 7 public variables inherited from QStyleOption

## Detailed Description

The QStyleOptionViewItemV3 class is used to describe the parameters necessary for drawing a frame in Qt 4.3 or above.

QStyleOptionViewItemV3 inherits QStyleOptionViewItem.

An instance of the QStyleOptionViewItemV3 class has type SO_ViewItem and version 3. 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. 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.

See QStyleOptionFrameV2's detailed description for a discussion of how to handle "V2" and other versioned classes.

See also QStyleOptionViewItem and QStyleOption.

## Member Type Documentation

### enum QStyleOptionViewItemV3::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
--- | --- | ---
`QStyleOptionViewItemV3::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.

See also StyleOptionType.

## Member Function Documentation

### QStyleOptionViewItemV3::QStyleOptionViewItemV3 ()

Constructs a QStyleOptionViewItemV3 object.

### QStyleOptionViewItemV3::QStyleOptionViewItemV3 ( const QStyleOptionViewItemV3 & other )

Constructs a copy of other.

### QStyleOptionViewItemV3::QStyleOptionViewItemV3 ( const QStyleOptionViewItem & other )

Constructs a copy of other.

### QStyleOptionViewItemV3 & QStyleOptionViewItemV3::operator= ( const QStyleOptionViewItem & other )

Assigns the other style option to this style option. The other style option can be an instance of the QStyleOptionViewItemV2, QStyleOptionViewItemV3 or QStyleOptionViewItem types.