内容

特性
信号
方法
详细描述

Menu QML Type

Provides a menu component for use as a context menu, popup menu, or as part of a menu bar. 更多...

导入语句：	import QtQuick.Controls 1.4
Since:	Qt 5.1

所有成员列表，包括继承成员

特性

enabled : bool
iconName : string
iconSource : url
items : list<Object>
style : Component
title : string
type : enumeration
visible : bool

信号

aboutToHide ()
aboutToShow ()

方法

MenuItem addItem (string text )
Menu addMenu (string title )
void addSeparator ()
void insertItem (int before , object item )
MenuItem insertItem (int before , string title )
MenuItem insertMenu (int before , string title )
void insertSeparator (int before )
void popup ()
void removeItem ( item )

详细描述

Menu {
    title: "Edit"
    MenuItem {
        text: "Cut"
        shortcut: "Ctrl+X"
        onTriggered: ...
    }
    MenuItem {
        text: "Copy"
        shortcut: "Ctrl+C"
        onTriggered: ...
    }
    MenuItem {
        text: "Paste"
        shortcut: "Ctrl+V"
        onTriggered: ...
    }
    MenuSeparator { }
    Menu {
        title: "More Stuff"
        MenuItem {
            text: "Do Nothing"
        }
    }
}

The main uses for menus:

作为 top-level menu in a MenuBar
作为 submenu inside another menu
as a standalone or context menu

Note that some properties, such as enabled , text ，或 iconSource , only make sense in a particular use case of the menu.

另请参阅 MenuBar , MenuItem ，和 MenuSeparator .

特性文档编制

enabled : bool

Whether the menu is enabled, and responsive to user interaction as a submenu. Its value defaults to true .

iconName : string

Sets the icon name for the menu icon. This will pick the icon with the given name from the current theme. Only works as a submenu.

Its value defaults to an empty string.

另请参阅 iconSource .

iconSource : url

Sets the icon file or resource url for the menu icon as a submenu. Defaults to an empty URL.

另请参阅 iconName .

[default] items : list < Object >

The list of items in the menu.

Menu only accepts objects of type Menu , MenuItem ，和 MenuSeparator as children. It also supports Instantiator objects as long as the insertion is being done manually using insertItem() .

Menu {
    id: recentFilesMenu
    Instantiator {
        model: recentFilesModel
        MenuItem {
            text: model.fileName
        }
        onObjectAdded: recentFilesMenu.insertItem(index, object)
        onObjectRemoved: recentFilesMenu.removeItem(object)
    }
    MenuSeparator {
        visible: recentFilesModel.count > 0
    }
    MenuItem {
        text: "Clear menu"
        enabled: recentFilesModel.count > 0
        onTriggered: recentFilesModel.clear()
    }
}

Note that in this case, the index parameter passed to insertItem() is relative to the position of the Instantiator in the menu, as opposed to absolute position in the menu.

另请参阅 MenuItem and MenuSeparator .

style : 组件

The style Component for this control.

This QML property was introduced in QtQuick.Controls.Styles 1.2.

另请参阅 MenuStyle .

title : string

Title for the menu as a submenu or in a menubar.

Mnemonics are supported by prefixing the shortcut letter with &. For instance, "\&File" will bind the Alt-F shortcut to the "File" menu. Note that not all platforms support mnemonics.

Its value defaults to an empty string.

type : enumeration

This property is read-only and constant, and its value is type .

visible : bool

Whether the menu should be visible as a submenu of another Menu, or as a menu on a MenuBar . Its value defaults to true .

注意： This has nothing to do with the actual menu pop-up window being visible. Use aboutToShow() and aboutToHide() if you need to know when the pop-up window will be shown or hidden.

信号文档编制

aboutToHide ()

此信号被发射仅仅在菜单对用户隐藏之前。

This QML signal was introduced in QtQuick.Controls 1.4.

另请参阅 aboutToShow() .

aboutToShow ()

此信号被发射仅仅在菜单对用户展示之前。

This QML signal was introduced in QtQuick.Controls 1.4.

另请参阅 aboutToHide() .

方法文档编制

MenuItem addItem ( string text )

Adds an item to the menu. Returns the newly created MenuItem .

另请参阅 insertItem() .

Menu addMenu ( string title )

Adds a submenu to the menu. Returns the newly created Menu .

另请参阅 insertMenu() .

void addSeparator ()

Adds a separator to the menu.

另请参阅 insertSeparator() .

void insertItem ( int before , object item )

插入 item at the index before in the current menu. In this case, item can be either a MenuItem ， MenuSeparator ，或 Menu .

另请参阅 removeItem() .

MenuItem insertItem ( int before , string title )

Creates and inserts an item with title title at the index before in the current menu. Returns the newly created MenuItem .

另请参阅 addItem() .

MenuItem insertMenu ( int before , string title )

Creates and inserts a submenu with title title at the index before in the current menu. Returns the newly created Menu .

另请参阅 addMenu() .

void insertSeparator ( int before )

Creates and inserts a separator at the index before in the current menu.

另请参阅 addSeparator() .

Opens this menu under the mouse cursor. It can block on some platforms, so test it accordingly.

void removeItem ( item )

移除 item from the menu. In this case, item can be either a MenuItem ， MenuSeparator ，或 Menu .

另请参阅 insertItem() .