The QStyleOptionToolButton class is used to describe the parameters for drawing a tool button. 更多...
| 头： | #include <QStyleOptionToolButton> |
| qmake: | QT += widgets |
| 继承： | QStyleOptionComplex |
| enum | StyleOptionType { Type } |
| enum | StyleOptionVersion { Version } |
| enum | ToolButtonFeature { None, Arrow, Menu, PopupDelay, HasMenu, MenuButtonPopup } |
| flags | ToolButtonFeatures |
| QStyleOptionToolButton () | |
| QStyleOptionToolButton (const QStyleOptionToolButton & other ) |
| Qt::ArrowType | arrowType |
| ToolButtonFeatures | features |
| QFont | font |
| QIcon | icon |
| QSize | iconSize |
| QPoint | pos |
| QString | text |
| Qt::ToolButtonStyle | toolButtonStyle |
The QStyleOptionToolButton class is used to describe the parameters for drawing a tool button.
QStyleOptionToolButton contains all the information that QStyle 函数需要绘制 QToolButton .
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 QStyleOptionButton .
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 |
|---|---|---|
QStyleOptionToolButton::Type
|
SO_ToolButton
|
提供样式选项的类型 ( SO_ToolButton 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 |
|---|---|---|
QStyleOptionToolButton::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 .
描述工具按钮可以拥有的各种特征。
| 常量 | 值 | 描述 |
|---|---|---|
QStyleOptionToolButton::None
|
0x00
|
A normal tool button. |
QStyleOptionToolButton::Arrow
|
0x01
|
The tool button is an arrow. |
QStyleOptionToolButton::Menu
|
0x04
|
The tool button has a menu. |
QStyleOptionToolButton::PopupDelay
|
0x08
|
There is a delay to showing the menu. |
QStyleOptionToolButton::HasMenu
|
0x10
|
The button has a popup menu. |
QStyleOptionToolButton::MenuButtonPopup
|
Menu
|
The button should display an arrow to indicate that a menu is present. |
ToolButtonFeatures 类型是 typedef 对于 QFlags <ToolButtonFeature>. It stores an OR combination of ToolButtonFeature values.
另请参阅 features , QToolButton::toolButtonStyle ()，和 QToolButton::popupMode ().
构造 QStyleOptionToolButton , initializing the members variables to their default values.
构造副本为 other 样式选项。
此变量保持工具按钮的箭头方向
This value is only used if features 包括 Arrow 。默认值为 Qt::DownArrow .
This variable holds an OR combination of the tool button's features
默认值为 None .
另请参阅 ToolButtonFeature .
This variable holds the font that is used for the text
This value is only used if toolButtonStyle is Qt::ToolButtonTextUnderIcon , Qt::ToolButtonTextBesideIcon ，或 Qt::ToolButtonTextOnly . By default, the application's default font is used.
This variable holds the icon for the tool button
默认值为空图标 (即：图标既没有像素图，也没有文件名)。
另请参阅 iconSize .
This variable holds the size of the icon for the tool button
默认值为 QSize (-1, -1)，即：无效尺寸。
This variable holds the position of the tool button
The default value is a null point, i.e. (0, 0)
This variable holds the text of the tool button
This value is only used if toolButtonStyle is Qt::ToolButtonTextUnderIcon , Qt::ToolButtonTextBesideIcon ，或 Qt::ToolButtonTextOnly . The default value is an empty string.
This variable holds a Qt::ToolButtonStyle value describing the appearance of the tool button
默认值为 Qt::ToolButtonIconOnly .
另请参阅 QToolButton::toolButtonStyle ().
