QtQuick学习笔记之QML键盘Keys事件

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记录Qtquick核心编程学习笔记:

import QtQuick 2.5

import QtQuick.Controls 1.4

Rectangle{

    width:300;

    height:400;

    id:root;

    focus: true;

    Keys.enabled: true;

    Keys.forwardTo: [moveText, textCheck];

    Keys.onEscapePressed: {

        Qt.quit();

    Text{

        id:moveText;

        x:20;

        y:30;

        width: 200;

        height: 30;

        color: "red";

        text:"Hello world";

        font:{bold: true; pixelSize:24;}

        Keys.enabled: true;

        Keys.onPressed: {

            switch(event.key)

            case Qt.Key_Left:

                x -= 10;

                break;

            case Qt.Key_Right:

                x += 10;

                break;

            case Qt.Key_Up:

                y -= 10;

                break;

            case Qt.Key_Down:

                y += 10;

                break;

            default:

                return;

            event.accepted = true;

    CheckBox {

        id:textCheck;

        anchors.left:  parent.left;

        anchors.leftMargin: 10;

        anchors.bottom: parent.bottom;

        anchors.bottomMargin: 10;

        text: "checkBox";

        z:1;

Keys专门为Item处理按键事件的对象

详细请查看QT帮助

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