On Tue, Nov 25, 2014 at 12:56 PM, zeljko <zeljko at holobit.net> wrote: > IMO, problem is that OI checkboxes height is hardcoded. No, I have changed it to use AutoSize instead. It partially solved the serious redraw issue on Windows. See issue http://bugs.freepascal.org/view.php?id=22347 and r46880. Regards, Juha