怎么获取鼠标点击的graphic对象啊？？？

map.on("click", function(evt){

				var query = new Query();

				query.geometry = evt.mapPoint;

				query.distance = 100

                featureLayer.queryFeatures(query, selectInshuzu);

});

		function selectInshuzu(response){

			var feature;

			var features = response.features;

			if(features.length>0){

				feature = features[0];				

				shuzu.push(feature.attributes[featureLayer.objectIdField]);

				}

				var query = new Query();

				query.objectIds = shuzu;

				// Use an objectIds selection query (should not need to go to the server)

				featureLayer.selectFeatures(query, FeatureLayer.SELECTION_ADD, function(results){

                	var popTotal = 0;

			        for (var x = 0; x < results.length; x++) {

				        popTotal = popTotal + results[x].attributes["POP2000"];

			        }

			        console.log(popTotal);

			});

		}

featurelayer.on("click", function(evt){

        evt.graphic.attributes//这样就能获取到属性了。

       }

       )