怎么设置EXT4 GRID鼠标悬停在列上，弹出提示层显示列内的内容？

Question

RT，哪一个知道，找了好久了没搞定！

鼠标放到某一行只能提示固定列，方法如下：
[code="java"]
listeners: {

render: function(g) {

//g.on("itemmouseenter", function(grid, row, col) {
g.on("itemmouseenter", function(view,record,mode,index,e) {

                 grid.tip = Ext.create('Ext.tip.ToolTip', {
                    target: view.el,          // The overall target element.
                    delegate: view.itemSelector, // Each grid row causes its own seperate show and hide.
                    trackMouse: true,         // Moving within the row should not hide the tip.
                    renderTo: Ext.getBody(),  // Render immediately so that tip.body can be referenced prior to the first show.
                    listeners: {              // Change content dynamically depending on which element triggered the show.
                        beforeshow: function updateTipBody(tip) {
                            tip.update(view.getRecord(tip.triggerElement).get('name'));
                        }
                    }
                });

             });  
         }  
     }

[/code]

---

怎么动态获取鼠标所在列的dataIndex？？？

Answer 1

列上加监听，我第一次回复的时候就建议你这样做。
[code="java"]{
xtype: 'gridcolumn',
dataIndex: 'name',
text: 'Name',
listeners: {
columnshow: {
fn: me.onGridcolumnColumnshow,
scope: me
}
}
}

.....
onGridcolumnColumnshow: function(ct, column, options) {
//这里写逻辑代码
}[/code]