beforeColumnStateChange

<pre><code>说明：列状态改变前事件 例：示例中data格式为{ cellName: ‘列名’, propertyName: ‘状态名’, value: ‘状态名’, oldValue: ‘旧值’} viewmodel.get(propertyName).on(' beforeColumnStateChange', function (data) { return true; }); 返回true继续列状态改变，返回false终止状态改变</code></pre>