@theo
Thank you for your suggestions. I know TKGrid and it seems to be comparable to ProfGrid. ProfGrid has RTF text mode implemented, but maybe I can define my own cell writer class for TKGrid. I'm very glad that a Lazarus port for VirtualTreeView exists. Its a great component, I use it already as well, but in my opinion not directly suitable as grid component. Am I wrong? I have never thought about it. Well basically its possible, but I think it need a lot of additional work to implement direct grid editing in the way I need it.
Ulrich