AbstractButton QML Type
Abstract base type providing functionality common to buttons. 更多...
| Import Statement: | import QtQuick.Controls 2.2 |
| 开始支持版本: | Qt 5.7 |
| 基类: | |
| 派生类: | Button, CheckBox, DelayButton, ItemDelegate, MenuItem, RadioButton, Switch, and TabButton |
属性
- autoExclusive : bool
- checkable : bool
- checked : bool
- down : bool
- indicator : Item
- pressed : bool
- text : string
信号
- void canceled()
- void clicked()
- void doubleClicked()
- void pressAndHold()
- void pressed()
- void released()
- void toggled()
方法
- void toggle()
详细描述
AbstractButton provides the interface for controls with button-like behavior; for example, push buttons and checkable controls like radio buttons and check boxes. As an abstract control, it has no delegate implementations, leaving them to the types that derive from it.
参见 ButtonGroup and Button Controls.
属性
This property holds whether auto-exclusivity is enabled.
If auto-exclusivity is enabled, checkable buttons that belong to the same parent item behave as if they were part of the same ButtonGroup. Only one button can be checked at any time; checking another button automatically unchecks the previously checked one.
Note: The property has no effect on buttons that belong to a ButtonGroup.
RadioButton and TabButton are auto-exclusive by default.
This property holds whether the button is checkable.
A checkable button toggles between checked (on) and unchecked (off) when the user clicks on it or presses the space bar while the button has active focus.
Setting checked to true forces this property to true.
The default value is false.
参见 checked.
This property holds whether the button is checked.
参见 checkable.
indicator : Item |
This property holds the indicator item.
This property holds whether the button is physically pressed. A button can be pressed by either touch or key events.
参见 down.
This property holds a textual description of the button.
Note: The text is used for accessibility purposes, so it makes sense to set a textual description even if the content item is an image.
参见 contentItem.
信号
This signal is emitted when the button loses mouse grab while being pressed, or when it would emit the released signal but the mouse cursor is not inside the button.
This signal is emitted when the button is interactively double clicked by the user.
This signal is emitted when the button is interactively pressed and held down by the user.
This signal is emitted when a checkable button is interactively toggled by the user.
This QML signal was introduced in QtQuick.Controls 2.2.