Button.qml Example File

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 import Qt 4.7

 Item {
     id: container

     signal clicked

     property string text
     property color textColor: "white"

     BorderImage {
         id: buttonImage
         source: "images/toolbutton.sci"
         width: container.width; height: container.height
     }

     MouseArea {
         id: mouseRegion
         anchors.fill: buttonImage
         onClicked: { container.clicked(); }
     }
     Text {
         id: buttonText
         color: textColor
         anchors.centerIn: buttonImage; font.bold: true
         text: container.text; style: Text.Raised; styleColor: "black"
     }

     states: [
         State {
             name: "Pressed"
             when: mouseRegion.pressed == true
             PropertyChanges { target: buttonImage; opacity: 0.25 }
             PropertyChanges { target: buttonText; opacity: 0.25 }
         },
         State {
             name: "Disabled"
             PropertyChanges{ target: buttonImage; opacity: 0 }
             PropertyChanges{ target: buttonText; opacity: 0 }
         }

     ]

     function disable() {
         container.state = "Disabled";
         mouseRegion.enabled = false;
     }
 }