If you have set a ‘hint’ on any data element:

then you will be notified with a CHINT event whenever the mouse is moved over a hinted data item.

The message will report:

1. chart id (string) e.g. ‘2001 forecast’
2. series id (string) e.g. ‘budget’ or null if you don’t set it
3. row,col of the item in the original dataset (if you plot a simple vector then col is always = 1) as integer pair
4. hint text as string e.g. “Provisional data only”

You would probably use this information to update a hint in your application’s status bar.

See also ...
chHint – add data hints