qml键盘按键事件

Text {
        text: qsTr("Test key events from Gamepad")
        anchors.centerIn: parent
        focus: true
        Keys.onPressed: {
            if (event.key === Qt.Key_Up) {
                text = "Key Up Pressed";
            } else if (event.key === Qt.Key_Down) {
                text = "Key Down Pressed";
            } else if (event.key === Qt.Key_Right) {
                text = "Key Right Pressed";
            } else if (event.key === Qt.Key_Left) {
                text = "Key Left Pressed";
            } else if (event.key === Qt.Key_Return) {
                text = "Key Return Pressed";
            } else if (event.key === Qt.Key_Back) {
                text = "Key Back Pressed";
            } else if (event.key === Qt.Key_Forward) {
                text = "Key Forward Pressed";
            } else if (event.key === Qt.Key_Y) {
                text = "Key Y Pressed";
            }
        }
        Keys.onReleased: {
            if (event.key === Qt.Key_Up) {
                text = "Key Up Released";
            } else if (event.key === Qt.Key_Down) {
                text = "Key Down Released";
            } else if (event.key === Qt.Key_Right) {
                text = "Key Right Released";
            } else if (event.key === Qt.Key_Left) {
                text = "Key Left Released";
            } else if (event.key === Qt.Key_Return) {
                text = "Key Return Released";
            } else if (event.key === Qt.Key_Back) {
                text = "Key Back Released";
            } else if (event.key === Qt.Key_Forward) {
                text = "Key Forward Released";
            } else if (event.key === Qt.Key_Y) {
                text = "Key Y Released";
            }
        }
    }