QML 动态创建对象

创建：
               var xpos = (left_X- width*0.5)
                var ypos = getY(minPrice)
                var  bshow = false

                var src2 = 'import QtQuick 2.0;import "qrc:/controls";RT_XdrInfo  {x:%1;y:%2;show:false ;dat:%3;}';
                src2 = src2.arg((root.canvas._canvas.width -xpos )<120? (root.canvas._canvas.width -130):xpos+ 30).arg(ypos + 30).arg(JSON.stringify(xdr))

                var newObject2 = Qt.createQmlObject(src2,root.canvas._canvas, "showxdrInfo");

                if (newObject2 === null) {
                    // Error Handling
                    console.log("Error creating object new xdr info Object！");
                }else{

                    var xdrinfodata ={
                        time:time,
                        obj:newObject2,
                    }
                    xdrInfoarr.push(xdrinfodata)
                }

                var src = 'import QtQuick 2.0 ;import "qrc:/controls";Text {id: "flgicon";x: %1;y:%2;font.family: "iconfont";text:  String.fromCharCode(0xe65b);color: "#FF0000";font.pixelSize: 24;MouseArea {id: flgArea; parent.width;height: parent.height;anchors.fill: parent ;hoverEnabled: true;onEntered:{onShowInfo(%3,true);} onExited: {onShowInfo(%3,false);}} } '
                src = src.arg(xpos).arg(ypos).arg(time.toString())

                var newObject = Qt.createQmlObject(src,root.canvas._canvas, "mouseItem");
                if (newObject === null) {
                    // Error Handling
                    console.log("Error creating object flg icon！");
                }else{
                    flgxdrarr.push(newObject)
                }
            }

清理：

   if(flgxdrarr.length)
        {
            for(var i=0;i<flgxdrarr.length;i++)
                flgxdrarr[i].destroy();
        }
        flgxdrarr = []

        if(xdrInfoarr.length)
        {
            for(var i=0;i<xdrInfoarr.length;i++)
                xdrInfoarr[i].obj.destroy();
        }
        xdrInfoarr = []

　　

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