qml: 自定义按钮-- 仿QML自带控件；

import QtQuick 2.0

Rectangle {
    id: btn;
        width: 50;
        height: 20;
        radius: 2;
        border.color: "#A3A3A3";
        border.width: 1;
        property alias text:btnTxt.text;
        Text {
            id: btnTxt;
            anchors.centerIn: parent;
            text: qsTr("text")
        }
        Gradient{
                id: grad;
                    GradientStop{ position: 0.0; color: "#FDFDFD";}
                    GradientStop{ position: 0.5; color: "#EFEFEF"; }
                    GradientStop{ position: 1.0; color: "#E3E3E3";}
                }
        gradient: grad;
        MouseArea{
            anchors.fill: parent;
            onPressed: {
                console.log("clicked")
                btn.color = "#D1D1D1"
                btn.gradient = undefined;
            }
            onReleased:{
                console.log("release")
                btn.color = "tansparent";
                btn.gradient  = grad;
            }
        }
}