GridControl - How to implement events for custom printing cells and headers

This is an example of a GridControl that has two custom events. These events can be used for custom drawing cells and headers in PrintPreview.
The MyGridViewPrintInfo class inherits from the GridViewPrintInfo and contains overridden methods: 
1) PrintRowCell - for raising events for custom drawing cells;
2) PrintHeader - for raising events for custom drawing headers.