| 
 | virtual | 
Overridden. Returns tooltip and description for stock data points.
Override this method in a derived class to display custom tooltips.
| nDataPointIndex | Specifies data point index. | 
| strTooltip | Should contain non empty tooltip text when the function returns. | 
| strTooltipDescr | Should contain tooltip description when the function returns. | 
Reimplemented from CBCGPChartSeries.