NoteButtonView.qml Example File

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 import QtQuick 1.0

 /* A view component for buttons for choosing notes. */
 ListView {
     id: noteChooser

     property real currentFrequency: 82.407

     signal noteSelected(string note, real frequency, int index)

     //Press down the button corresponding to the given note.
     function pushButton(index) {
         currentIndex = index;
     }

     width: 50*model.count + spacing*(model.count-1); height: 50
     orientation: ListView.Horizontal
     model: NotesModel {}
     delegate: notesDelegate
     keyNavigationWraps: true
     boundsBehavior: Flickable.StopAtBounds

     Component {
         id: notesDelegate

         ToggleButton {
             id: noteButton

             width: height; height: noteChooser.height
             offImageSource: offSource
             onImageSource: onSource
             state: noteButton.ListView.isCurrentItem ? "pressed" : "unPressed"
             onSelected: {
                 noteChooser.noteSelected(note, frequency, index)
                 if (note != "Auto") {
                     currentFrequency = frequency
                 }
             }
             onPushed: {
                 noteButton.ListView.view.currentIndex = index
             }
         }
     }
 }