QStyleOptionComboBox 类是用于绘制组合框的描述参数。 更多...
头: | #include <QStyleOptionComboBox> |
qmake: | QT += widgets |
继承: | QStyleOptionComplex |
enum | StyleOptionType { Type } |
enum | StyleOptionVersion { Version } |
QStyleOptionComboBox (const QStyleOptionComboBox & other ) | |
QStyleOptionComboBox () |
QIcon | currentIcon |
QString | currentText |
bool | editable |
bool | frame |
QSize | iconSize |
QRect | popupRect |
QStyleOptionButton contains all the information that QStyle 函数需要绘制 QComboBox .
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 , QStyleOptionComplex ,和 QComboBox .
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 |
---|---|---|
QStyleOptionComboBox::Type
|
SO_ComboBox
|
提供样式选项的类型 ( SO_ComboBox 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 |
---|---|---|
QStyleOptionComboBox::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 .
构造副本为 other 样式选项。
Creates a QStyleOptionComboBox, initializing the members variables to their default values.
This variable holds the icon for the current item of the combo box
默认值为空图标 (即:图标既没有像素图,也没有文件名)。
This variable holds the text for the current item of the combo box
默认值为空字符串。
This variable holds whether or not the combobox is editable or not
the default value is false
另请参阅 QComboBox::isEditable ().
This variable holds whether the combo box has a frame
默认值为 true。
This variable holds the icon size for the current item of the combo box
默认值为 QSize (-1, -1),即:无效尺寸。
This variable holds the popup rectangle for the combobox
The default value is a null rectangle, i.e. a rectangle with both the width and the height set to 0.
This variable is currently unused. You can safely ignore it.