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procedure TForm1.STRINGGRID1DrawCell(Sender: TObject; ACol, ARow: Integer;
  Rect: TRect; State: TGridDrawState);
begin
    With (Sender as TStringGrid) Do
    begin
        Canvas.Font.Color:=clred;
        Canvas.Font.Style := Canvas.Font.Style+[fsbold];
        Canvas.TextRect (
            Rect,
            Rect.Left + 2, Rect.Top + 2,
            Cells[ACol, ARow]);
    end;
end;