Thx Edward

Setting the focus outside the grid has solved my problem.


>>I've got a grid of entries, the two important columns are a tick box (required), and a time in hrs (hrs).
>>
>>Where is the best method to recalculate the total hours (TxtNHours), in the click event method or the interactive change event?
>>
>>My calculation code looks like this:
>>
>>

>>DODEFAULT()
>>SELECT SUM(hrs) as total FROM linemarkingbody WITH (buffering=.t.) WHERE linemarkingbody.no=linemarkinghead.no AND required INTO CURSOR tmptotal
>>IF ISNULL(TMPTOTAL.TOTAL)
>> REPLACE totalhrs WITH 0 IN linemarkinghead
>>ELSE 
>> REPLACE totalhrs WITH tmptotal.total IN linemarkinghead
>>ENDIF 
>>thisform.txtNHours.Refresh 
>>

>
>It would be better to do it in InteractiveChange event, but remember to take focus out of the grid before calculating the sum.