>>What would suddenly cause a subclassed grid to
>>
>>1. start complaning about a perfectly valid dynamic backcolor expession and
>>
>>2. fail to refresh the controls in the grid -- that is the default refresh() behavior of the grid is not occuring.
>>
>>This started today in a grid that I have used for 6 months without problem. I have...
>>
>>1. Reinstalled VFP
>>2. Reinstalled the derived grid class from a backup
>>3. Reinstalled the derived grid class from an older backup
>>4. Pulled what little is left of my hair out...
>>
>>Nothing...
>>
>>Any insight would be a blessing.
>>
>>Thanks,
>
>What platform? Have you added any service packs lately?


Windows98, VFP5a. I cannot remember what SP we added last to try to fix W98, but there is at least one in this machine.

By the way, John, I did fix it by simply copying over a backup. But I am very curious as to why this mysterious behavior, and what the cure might be.

Thanks,