We're glad to inform you that this feature will be available in the next major version of the DXCharts suite (v2009 vol 3). In this version, we've added the CustomDrawSeries and CustomDrawSeriesPoint events to the ChartControl class.
In case of any difficulty with using this functionality in DXCharts, please write to our Support Team or refer to the DXCharts documentation, which will be supplied with the official release of v2009 vol 3. Note that we're planning to release DXCharts v2009 vol 3 later this year.
Best regards, Alan.
R&D, .NET Team.