What's My Title Today?

So you think when you set the showDataTips property on the DataGridColumn to true that that will make the datatip show... WRONG... you also need to set the dataTipField property to your dataField. So simple... yet this took me half an hour to figure out.

To customize the datatip in a linechart in flex you need to use the datatipfunction property that refers to a function. This function must return a string and take a parameter of type HitData. To get the current VALUE of the line point you're mousing over you need to use LineSeriesItem(hitData.chartItem).yValue - I found this difficult to find out at first. Here's an example: private function lcDataTipFunction(hitData:HitData):String { var s:String; s = LineSeries(hitData.element).displayName + "\n"; s += LineSeriesItem(hitData.chartItem).yValue + "\n"; s += hitData.item.Day + " at " + hitData.item.Time; return s; }