Called on a moment when grid lines of a cell are being painted.

property OnGetCellGrid: TNxGetCellGridEvent read FOnGetCellGrid write FOnGetCellGrid;

Event provides opportunity to set TColor and TPenStyle for each of the borders surrounding cell.

Example

procedure TForm1.NxReportGridView61GetCellGrid(Sender: TObject; ACol, ARow: Integer;
  var Edges: TNxBorderEdges; State: TNxCellPaintingState);
begin
  if (ACol = 1) and (ARow = 2) then
  begin
    Edges[beLeft].Color := clBlue;
    Edges[beTop].Color := clRed;
    Edges[beRight].Color := clBlue;
    Edges[beBottom].Color := clRed;
    Edges[beBottom].Style := psDash;
  end;
end;