The QStyleOptionQ3ListViewItem class is used to describe an item drawn in a Q3ListView . 更多...
| 头： | #include <QStyleOptionQ3ListViewItem> |
| 继承： | QStyleOption |
| enum | Q3ListViewItemFeature { None, Expandable, MultiLine, Visible, ParentControl } |
| flags | Q3ListViewItemFeatures |
| enum | StyleOptionType { Type } |
| enum | StyleOptionVersion { Version } |
| QStyleOptionQ3ListViewItem () | |
| QStyleOptionQ3ListViewItem (const QStyleOptionQ3ListViewItem & other ) |
| int | childCount |
| Q3ListViewItemFeatures | features |
| int | height |
| int | itemY |
| int | totalHeight |
The QStyleOptionQ3ListViewItem class is used to describe an item drawn in a Q3ListView .
This class is used for drawing the compatibility Q3ListView 's items. It is not recommended for new classes .
QStyleOptionQ3ListViewItem contains all the information that QStyle functions need to draw the Q3ListView 项。
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 functions.
对于可以如何使用样式选项的演示范例，见 样式 范例。
另请参阅 QStyleOption , QStyleOptionQ3ListView ，和 Q3ListViewItem .
This enum describes the features a list view item can have.
| 常量 | 值 | 描述 |
|---|---|---|
QStyleOptionQ3ListViewItem::None
|
0x00
|
A standard item. |
QStyleOptionQ3ListViewItem::Expandable
|
0x01
|
The item has children that can be shown. |
QStyleOptionQ3ListViewItem::MultiLine
|
0x02
|
The item is more than one line tall. |
QStyleOptionQ3ListViewItem::Visible
|
0x04
|
The item is visible. |
QStyleOptionQ3ListViewItem::ParentControl
|
0x08
|
The item's parent is a type of item control ( Q3CheckListItem::Controller ). |
The Q3ListViewItemFeatures type is a typedef for QFlags <Q3ListViewItemFeature>. It stores an OR combination of Q3ListViewItemFeature values.
另请参阅 features , Q3ListViewItem::isVisible (), Q3ListViewItem::multiLinesEnabled ()，和 Q3ListViewItem::isExpandable ().
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 |
|---|---|---|
QStyleOptionQ3ListViewItem::Type
|
SO_Q3ListViewItem
|
提供样式选项的类型 ( SO_Q3ListViewItem 对于此类)。 |
类型内部使用通过 QStyleOption ，其子类，和 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.
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 |
|---|---|---|
QStyleOptionQ3ListViewItem::Version
|
1
|
1 |
版本的使用通过 QStyleOption 子类以实现扩展在不破坏兼容性的情况下。若使用 qstyleoption_cast ()，通常不需要校验它。
另请参阅 StyleOptionType .
构造 QStyleOptionQ3ListViewItem , initializing the members variables to their default values.
构造副本为 other 样式选项。
This variable holds the number of children the item has.
This variable holds the features for this item.
This variable is a bitwise OR of the features of the item. The deafult value is None .
另请参阅 Q3ListViewItemFeature .
This variable holds the height of the item.
This doesn't include the height of the item's children. The default height is 0.
另请参阅 Q3ListViewItem::height ().
This variable holds the Y-coordinate for the item.
默认值为 0。
另请参阅 Q3ListViewItem::itemPos ().
This variable holds the total height of the item, including its children.
The default total height is 0.
另请参阅 Q3ListViewItem::totalHeight ().
