QStyleOptionTitleBar Class
The QStyleOptionTitleBar class is used to describe the parameters for drawing a title bar. 更多...
| 头文件: | #include <QStyleOptionTitleBar> |
| qmake: | QT += widgets |
| 基类: | QStyleOptionComplex |
公有类型
| enum | StyleOptionType { Type } |
| enum | StyleOptionVersion { Version } |
公有函数
| QStyleOptionTitleBar() | |
| QStyleOptionTitleBar(const QStyleOptionTitleBar &other) |
- 2 个公有函数继承自 QStyleOption
公有变量
| QIcon | icon |
| QString | text |
| Qt::WindowFlags | titleBarFlags |
| int | titleBarState |
- 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 QStyleOptionTitleBar class is used to describe the parameters for drawing a title bar.
QStyleOptionTitleBar contains all the information that QStyle functions need to draw the title bar of a QMdiSubWindow.
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 QMdiSubWindow.
成员类型
enum QStyleOptionTitleBar::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 |
|---|---|---|
QStyleOptionTitleBar::Type | SO_TitleBar | The type of style option provided (SO_TitleBar 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 QStyleOptionTitleBar::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 |
|---|---|---|
QStyleOptionTitleBar::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.
成员函数
QStyleOptionTitleBar::QStyleOptionTitleBar()
Constructs a QStyleOptionTitleBar, initializing the members variables to their default values.
QStyleOptionTitleBar::QStyleOptionTitleBar(const QStyleOptionTitleBar &other)
Constructs a copy of the other style option.
成员变量
QIcon QStyleOptionTitleBar::icon
This variable holds the icon for the title bar
The default value is an empty icon, i.e. an icon with neither a pixmap nor a filename.
QString QStyleOptionTitleBar::text
This variable holds the text of the title bar
The default value is an empty string.
Qt::WindowFlags QStyleOptionTitleBar::titleBarFlags
This variable holds the widget flags for the title bar
The default value is Qt::Widget.
参见 Qt::WindowFlags.
int QStyleOptionTitleBar::titleBarState
This variable holds the state of the title bar
This is basically the window state of the underlying widget. The default value is 0.
参见 QWidget::windowState().