>>The AfterRowColChange Event seems to me a logical place to do all this manipulations. All you need is Current ActiveColumn property to un-color the header of previous column.
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>Right, but I don't want to create my own grid class (though it now seems like an easier route, than I currently follow). Anyway, I spent the whole morning today working on those changes and I almost achieved the desired functionality from the TextBox point of view. Lots of pemstatus, though, and tricky code...
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I strongly recomend that you reconsider your approch.