“簡潔是智慧的靈魂，冗長是膚淺的藻飾”------------------《哈姆萊特》莎士比亞

Import Statement: import QtQuick 2.5

Loader is used to dynamically load QML components.

Loader can load a QML file (using the source property) or a Component object (using the sourceComponent property). It is useful for delaying the creation of a component until it is required: for example, when a component should be created on demand, or when a component should not be created unnecessarily for performance reasons.

The loaded object can be accessed using the item property.

If the source or sourceComponent changes, any previously instantiated items are destroyed. Setting source to an empty string or setting sourceComponent to undefined destroys the currently loaded object, freeing resources and leaving the Loader empty.

詳細見QT文檔。

小栗子：

import QtQuick 2.4 Item{Rectangle{//Rectangle內顯示的內容由loader決定Loader{id : viewPanelanchors.fill: parent}}MouseArea {//當有信號來時，才load文件，生成實例anchors.fill: parentonClicked: {viewPanel.source = "selfDefined.qml" //自定義qml類型viewPanel.item.x= lineEdit1.x //------The loaded object can be accessed using the item propertyviewPanel.item.y= lineEdit1.y+lineEdit1.height+2viewPanel.item.state="active"}}}

轉載于:https://www.cnblogs.com/butterflybay/p/10347981.html

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