This example demonstrates how to create a GridControl descendant which allows exporting columns with an icon in its header. To accomplish this task, it is necessary to override the PrintHeader method in the custom GridViewPrintInfo class.
Note: GridControl does not export images (include the column headers images) to Excel for performance reason. Refer to the https://community.devexpress.com/blogs/ctodx/archive/2011/04/05/sneak-peek-improving-the-performance-and-memory-footprint-of-excel-and-pdf-export-from-winforms-grid-coming-in-v2011-1.aspx blog for details.