Ok, I fixed this problem by setting HighlightStyle to 0 at Clear and back to 2 after Search.

>Are you using the ZAP command, or are you recreating the cursor?
>
>>Hi everybody,
>>
>>I have a grid on the form. The recordsource for the grid is a cursor, which is created in the Init method of the business object.
>>
>>When my form is instantiated, the grid is displayed empty. I also have a button on the form called Clear. When I press that button, I zap the cursor and refresh the grid. At this point there is a blue line displayed in the grid. I have set HighlightStyle to 2 for that grid. Why I have such strange visual effect?
>>
>>Thanks in advance.