cxgrid显示行号

把cxGridView里OptionsView选项中的两项修改成如下

OptionsView.Indicator = True
OptionsView.IndicatorWidth = 40//宽度

在customDrawIndicatorCell事件中填写

procedure TForm1.cxGrid1BandedTableView1CustomDrawIndicatorCell(
Sender: TcxGridTableView; ACanvas: TcxCanvas;
AViewInfo: TcxCustomGridIndicatorItemViewInfo; var ADone: Boolean);
var
AIndicatorViewInfo: TcxGridIndicatorRowItemViewInfo;
ATextRect: TRect;
// AStyle: TcxStyle;
aCV:TcxCanvas;
begin
if not (AViewInfo is TcxGridIndicatorRowItemViewInfo) then
Exit;
aCV:=ACanvas ;
ATextRect := AViewInfo.ContentBounds;
AIndicatorViewInfo := AViewInfo as TcxGridIndicatorRowItemViewInfo;
InflateRect(ATextRect, -2, -1);

if AIndicatorViewInfo.GridRecord.Selected then //这个if段是为了在行号处把把选中的行号跟别的区分开，可不用
begin
aCV.Font.Style := Canvas.Font.Style + [fsBold];
aCV.Font.Color := clRed;
end
else
begin
aCV.Font.Style := Canvas.Font.Style - [fsBold];
acv.Font.Color := Canvas.Font.Color;
end;

Sender.LookAndFeelPainter.DrawHeader(ACanvas, AViewInfo.ContentBounds,
ATextRect, [], cxBordersAll, cxbsNormal, taCenter, vaCenter,
False, False, IntToStr(AIndicatorViewInfo.GridRecord.Index + 1),
// AStyle.Font, AStyle.TextColor, AStyle.Color);
acv.Font,acv.font.Color,acv.Brush.color );
ADone := True;
end;