QStyleOptionToolButton Class
The QStyleOptionToolButton class is used to describe the parameters for drawing a tool button. 更多...
| 头文件: | #include <QStyleOptionToolButton> |
| qmake: | QT += widgets |
| 基类: | QStyleOptionComplex |
公有类型
| enum | StyleOptionType { Type } |
| enum | StyleOptionVersion { Version } |
| enum | ToolButtonFeature { None, Arrow, Menu, PopupDelay, HasMenu, MenuButtonPopup } |
| flags | ToolButtonFeatures |
公有函数
| QStyleOptionToolButton() | |
| QStyleOptionToolButton(const QStyleOptionToolButton &other) |
- 2 个公有函数继承自 QStyleOption
公有变量
| Qt::ArrowType | arrowType |
| ToolButtonFeatures | features |
| QFont | font |
| QIcon | icon |
| QSize | iconSize |
| QPoint | pos |
| QString | text |
| Qt::ToolButtonStyle | toolButtonStyle |
- 2 个公有变量继承自 QStyleOptionComplex
- 8 个公有变量继承自 QStyleOption
详细描述
The QStyleOptionToolButton class is used to describe the parameters for drawing a tool button.
QStyleOptionToolButton contains all the information that QStyle functions need to draw 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.
For an example demonstrating how style options can be used, see the Styles example.
参见 QStyleOption, QStyleOptionComplex, and QStyleOptionButton.
成员类型
enum QStyleOptionToolButton::StyleOptionType
This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass.
| Constant | Value | Description |
|---|---|---|
QStyleOptionToolButton::Type | SO_ToolButton | The type of style option provided (SO_ToolButton for this class). |
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.
enum QStyleOptionToolButton::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 |
|---|---|---|
QStyleOptionToolButton::Version | 1 | 1 |
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.
参见 StyleOptionType.
enum QStyleOptionToolButton::ToolButtonFeature
flags QStyleOptionToolButton::ToolButtonFeatures
Describes the various features that a tool button can have.
| Constant | Value | Description |
|---|---|---|
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. |
The ToolButtonFeatures type is a typedef for QFlags<ToolButtonFeature>. It stores an OR combination of ToolButtonFeature values.
参见 features, QToolButton::toolButtonStyle(), and QToolButton::popupMode().
成员函数
QStyleOptionToolButton::QStyleOptionToolButton()
Constructs a QStyleOptionToolButton, initializing the members variables to their default values.
QStyleOptionToolButton::QStyleOptionToolButton(const QStyleOptionToolButton &other)
Constructs a copy of the other style option.
成员变量
Qt::ArrowType QStyleOptionToolButton::arrowType
This variable holds the direction of the arrow for the tool button
This value is only used if features includes Arrow. The default value is Qt::DownArrow.
ToolButtonFeatures QStyleOptionToolButton::features
This variable holds an OR combination of the tool button's features
The default value is None.
QFont QStyleOptionToolButton::font
This variable holds the font that is used for the text
This value is only used if toolButtonStyle is Qt::ToolButtonTextUnderIcon, Qt::ToolButtonTextBesideIcon, or Qt::ToolButtonTextOnly. By default, the application's default font is used.
QIcon QStyleOptionToolButton::icon
This variable holds the icon for the tool button
The default value is an empty icon, i.e. an icon with neither a pixmap nor a filename.
参见 iconSize.
QSize QStyleOptionToolButton::iconSize
This variable holds the size of the icon for the tool button
The default value is QSize(-1, -1), i.e. an invalid size.
QPoint QStyleOptionToolButton::pos
This variable holds the position of the tool button
The default value is a null point, i.e. (0, 0)
QString QStyleOptionToolButton::text
This variable holds the text of the tool button
This value is only used if toolButtonStyle is Qt::ToolButtonTextUnderIcon, Qt::ToolButtonTextBesideIcon, or Qt::ToolButtonTextOnly. The default value is an empty string.
Qt::ToolButtonStyle QStyleOptionToolButton::toolButtonStyle
This variable holds a Qt::ToolButtonStyle value describing the appearance of the tool button
The default value is Qt::ToolButtonIconOnly.