title: google visualization-Click event
body: <p>I am using google visulaization for drawing pie chart.Issue i am facing is, <strong>i cant able to capture click event</strong> on pie chart.i am doing like this.</p>
  
  <pre><code>function drawchartfromRe()
  {
      dashboard = new google.visualization.Dashboard(
              document.getElementById('dashboard_div'));
      //alert("RefuelLength"+totrefuelList.length);
      //alert("Vehicleid:"+totrefuelList[0].vehicleId);
     //google.load("visualization", "1", {packages:["corechart"]});
      data = new google.visualization.DataTable();
      data.addColumn('string', 'Task');
      data.addColumn('number', 'Quantity');
      data.addRows(totrefuelList.length);
      for (var i=0;i&lt;totrefuelList.length;i++)
      {
         data.setValue(i, 0, totrefuelList[i].vehicleName);
         data.setValue(i, 1, totrefuelList[i].totalRefuelQty);
      }
  
      // var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
       chart = new google.visualization.ChartWrapper({
        'chartType': 'PieChart',
        'containerId': 'chart_div',
        'options': {
            title: 'Refuel Trend',
            height:'500',
            width:'400',
            backgroundColor: { fill:'transparent' },
          'legend': 'right'
        }
      });
  
    /* google.visualization.events.addListener(chart, 'select', function(e) {
         // var selection = chart.getSelection();
        var vehid= data.getValue(visualization.getSelection()[0].row, 0);
          getRefueldailywise(vehid);
      });*/
     // chart.draw(data, options);
     drawDashboard(dashboard,data,chart);
     google.visualization.events.addListener(chart, 'select', function() {
         // grab a few details before redirecting
  
        alert(data.getValue(chart.getSelection()[0].row, 0));
         //location.href = 'http://www.google.com?row=' + row + '&amp;col=' + col + '&amp;year=' + year;
       });
  }
  </code></pre>
  
  <p>In firebug i am getting error like this..
  <strong>dashboard.getChart is not a function</strong></p>