[SOLVED]advice: Let user change a grids' options without repainting it

[kinlion]

I want to draw merged cells with TStringGrid, and write drawing code in a StringGrid's OnDrawCell event. But after calling the event handler, TStringGrid will draw the cell border. That's not my want. Then I remove goHorzLine from the StringGrid's Options in OnDrawCell, unfortunately this maks a dead-loop because after setting the Options, the StringGrid will be fully repainted.

Since FOptions is private of TCustomGrid, I have to add a public procedure to TCusomGrid to modify the Options.

Maybe it's better to let TCustomGrid have a way to modify Options without repaint?

[wp]

Did you try to call Grid.BeginUpdate before and Grid.EndUpdate after your changes? They should suppress any redraw requests in between.

[kinlion]

let me try 

[kinlion]

YES, BeginUpdate/EndUpdate works well. 
Thank you very much!

Did you try to call Grid.BeginUpdate before and Grid.EndUpdate after your changes? They should suppress any redraw requests in between.