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virtual |
Called by framework to obtain a chart tooltip description.
strTooltipDescr | A string contains a custom tooltip description. |
pSeries | A pointer to a series. |
nDataPointIndex | Zero-based index of the data point. |
pAxisX | A pointer to X axis. |
pAxisY | A pointer to Y axis. |
strLabelX | A default X axis name. |
strLabelY | A default Y axis name. |