We have prepared a small sample application demonstrating how to use click detection. I hope that it helps. Please, note that clicking Line
series is not supported.
We are intrigued by the your suggestions about the line chart click and zooming features. Those have popped up in the past and have been discussed, but unfortunately there are no concrete plans for their implementation. This does not mean we will not include them at some point in RadChart, rather that they will not be present in the immediate release and will remain on the watch list of potential features.
I hope I have been helpful. Your points have been updated.
the Telerik team