flex4中，图的canDropLabel属性一定要去掉

wonder4

于 2010-05-11 16:12:00 发布

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canDropLabel属性已经被弃用了，如果使用它，会报引用不能为空的异常。

TypeError: Error #1009: 无法访问空对象引用的属性或方法。
    at mx.charts.series::ColumnSeries/findDataPoints()[E:/dev/4.0.0/frameworks/projects/datavisualization/src/mx/charts/series/ColumnSeries.as:1635]
    at mx.charts.chartClasses::ChartBase/findDataPoints()[E:/dev/4.0.0/frameworks/projects/datavisualization/src/mx/charts/chartClasses/ChartBase.as:2202]
    at mx.charts.chartClasses::ChartBase/mouseMoveHandler()[E:/dev/4.0.0/frameworks/projects/datavisualization/src/mx/charts/chartClasses/ChartBase.as:4882]

TypeError: Error #1009: 无法访问空对象引用的属性或方法。
at mx.charts::AxisRenderer/measureHorizontalGutters()[E:/dev/4.0.0/frameworks/projects/datavisualization/src/mx/charts/AxisRenderer.as:2275]
at mx.charts::AxisRenderer/calcRotationAndSpacing()[E:/dev/4.0.0/frameworks/projects/datavisualization/src/mx/charts/AxisRenderer.as:1889]