內容

特性
附加特性
信號
詳細描述
可捲動 TextArea
Tab 鍵聚焦

TextArea QML 類型

多行文本輸入區域。更多...

import 語句：	import QtQuick.Controls 2.5
Since:	Qt 5.7
繼承：	TextEdit

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特性

background : Item
bottomInset : real
focusReason : enumeration
hoverEnabled : bool
hovered : bool
implicitBackgroundHeight : real
implicitBackgroundWidth : real
leftInset : real
palette : palette
placeholderText : string
placeholderTextColor : color
rightInset : real
topInset : real

附加特性

flickable : TextArea

信號

pressAndHold (MouseEvent event )
pressed (MouseEvent event )
released (MouseEvent event )

詳細描述

TextArea is a multi-line text editor. TextArea extends TextEdit 采用占位符文本功能，並添加裝飾。

TextArea {
    placeholderText: qsTr("Enter description")
}

TextArea is not scrollable by itself. Especially on screen-size constrained platforms, it is often preferable to make entire application pages scrollable. On such a scrollable page, a non-scrollable TextArea might behave better than nested scrollable controls. Notice, however, that in such a scenario, the background decoration of the TextArea scrolls together with the rest of the scrollable content.

可捲動 TextArea

If you want to make a TextArea scrollable, for example, when it covers an entire application page, it can be placed inside a ScrollView .

ScrollView {
    id: view
    anchors.fill: parent
    TextArea {
        text: "TextArea\n...\n...\n...\n...\n...\n...\n"
    }
}

A TextArea that is placed inside a ScrollView does the following:

Sets the content size automatically
Ensures that the background decoration stays in place
Clips the content

Tab 鍵聚焦

By default, pressing the tab key while TextArea has active focus results in a tab character being input into the control itself. To make tab pass active focus onto another item, use the attached KeyNavigation 特性：

TextField {
    id: textField
}
TextArea {
    KeyNavigation.priority: KeyNavigation.BeforeItem
    KeyNavigation.tab: textField
}

另請參閱 TextField , 定製 TextArea ，和輸入控件 .

特性文檔編製

background : Item

此特性保持背景項。

注意： If the background item has no explicit size specified, it automatically follows the control's size. In most cases, there is no need to specify width or height for a background item.

注意： Most controls use the implicit size of the background item to calculate the implicit size of the control itself. If you replace the background item with a custom one, you should also consider providing a sensible implicit size for it (unless it is an item like Image which has its own implicit size).

另請參閱 定製 TextArea .

bottomInset : real

This property holds the bottom inset for the background.

該特性在 QtQuick.Controls 2.5 (Qt 5.12) 引入。

另請參閱 Control Layout and topInset .

focusReason : enumeration

此特性保持最後聚焦更改的原因。

注意： This property does not indicate whether the control has active focus , but the reason why the control either gained or lost focus.

常量	描述
`Qt.MouseFocusReason`	齣現鼠標動作。
`Qt.TabFocusReason`	按下 Tab 鍵。
`Qt.BacktabFocusReason`	發生 Backtab。輸入可能包括 Shift 或 Control 鍵；如 Shift+Tab。
`Qt.ActiveWindowFocusReason`	窗口係統使此窗口活動 (或不活動)。
`Qt.PopupFocusReason`	應用程序打開/關閉彈齣窗口，抓取/釋放鍵盤焦點。
`Qt.ShortcutFocusReason`	用戶鍵入標簽的好友快捷方式
`Qt.MenuBarFocusReason`	菜單欄獲得聚焦。
`Qt.OtherFocusReason`	另一原因，通常特定於應用程序。

另請參閱 Item::activeFocus .

hoverEnabled : bool

This property determines whether the text area accepts hover events. The default value is true .

該特性在 QtQuick.Controls 2.1 (Qt 5.8) 引入。

另請參閱 hovered .

[read-only] hovered : bool

This property holds whether the text area is hovered.

該特性在 QtQuick.Controls 2.1 (Qt 5.8) 引入。

另請參閱 hoverEnabled .

[read-only] implicitBackgroundHeight : real

This property holds the implicit background height.

值等於 background ? background.implicitHeight : 0 .

該特性在 QtQuick.Controls 2.5 (Qt 5.12) 引入。

另請參閱 implicitBackgroundWidth .

[read-only] implicitBackgroundWidth : real

This property holds the implicit background width.

值等於 background ? background.implicitWidth : 0 .

該特性在 QtQuick.Controls 2.5 (Qt 5.12) 引入。

另請參閱 implicitBackgroundHeight .

leftInset : real

This property holds the left inset for the background.

該特性在 QtQuick.Controls 2.5 (Qt 5.12) 引入。

另請參閱 Control Layout and rightInset .

palette : palette

This property holds the palette currently set for the text area.

該特性在 QtQuick.Controls 2.3 (Qt 5.10) 引入。

另請參閱 Control::palette .

placeholderText : string

This property holds the short hint that is displayed in the text area before the user enters a value.

placeholderTextColor : color

This property holds the color of placeholderText .

該特性在 QtQuick.Controls 2.5 (Qt 5.12) 引入。

另請參閱 placeholderText .

rightInset : real

This property holds the right inset for the background.

該特性在 QtQuick.Controls 2.5 (Qt 5.12) 引入。

另請參閱 Control Layout and leftInset .

topInset : real

This property holds the top inset for the background.

該特性在 QtQuick.Controls 2.5 (Qt 5.12) 引入。

另請參閱 Control Layout and bottomInset .

附加特性文檔編製

TextArea.flickable : TextArea

This property attaches a text area to a Flickable .

另請參閱 ScrollBar , ScrollIndicator ，和可捲動 TextArea .

信號文檔編製

pressAndHold ( MouseEvent event )

This signal is emitted when there is a long press (the delay depends on the platform plugin). The event parameter provides information about the press, including the x and y position of the press, and which button is pressed.

另請參閱 pressed and released .

pressed ( MouseEvent event )

This signal is emitted when the text area is pressed by the user. The event parameter provides information about the press, including the x and y position of the press, and which button is pressed.

該信號在 QtQuick.Controls 2.1 (Qt 5.8) 引入。

另請參閱 released and pressAndHold .

released ( MouseEvent event )

This signal is emitted when the text area is released by the user. The event parameter provides information about the release, including the x and y position of the press, and which button is pressed.

該信號在 QtQuick.Controls 2.1 (Qt 5.8) 引入。

另請參閱 pressed and pressAndHold .