[delphi-en] TStringGrid problem

[Jamie L. Mitchell]

This is annoying.  Using Delphi 2005 on a Windows XP box.  This
anomaly happens with both TSringGrid and TjvStringGrid.

I go into edit mode 

   sgProg.Options := grdOA.Options + [goEditing, goAlwaysShowEditor];

and do some editing of the cells.  Then, if I want to leave edit mode,
I clean out all of the cells 

    For i := 0 To N Do
        For k := 0 To M Do
            sgProg.Cells[x,y] := '';


and then do the reverse

   sgProg.Options := grdOA.Options - [goEditing, goAlwaysShowEditor];

Now here is the problem.  After clearing out all of the cells, and
turning off the editor, sometimes cells retain the text they had
before I cleared them out.  Physically placing a mouse click in any
cell causes the update to occur, causing all of the cells to go to
NULL.  I have tried a variety of fixes, including

    sgProg.Refresh;
    sgProg.Repaint;
    sgProg.StickADaggerThroughItsHeart();
    etc.

It just wants to hold onto the text that is no longer in its buffer. 
Any suggestions?  As I said, the Jedi control has the same behavior.

Thanks
jamie