为什么我访问listview的subitems的内容会出错呢，求解
下面第一段是cunstomdraw的，一访问subitems就出错，第二段没出错

Delphi(Pascal) code

procedure TForm1.ListView1AdvancedCustomDrawItem(Sender: TCustomListView;  Item: TListItem; State: TCustomDrawState; Stage: TCustomDrawStage;  var DefaultDraw: Boolean);var  i: integer;  rect, BoundRect: TRect;begin  BoundRect:=Item.DisplayRect(drBounds);  if cdsFocused in State then  begin    Sender.Canvas.Brush.Color := clRed;  end  else  begin    Sender.Canvas.Brush.Color := clGray ;  end;   Sender.Canvas.Font.Color :=clWhite ;   ListView1.Canvas.FillRect(BoundRect);  for i:=0 to ListView1.Columns.Count -1 do  begin    ListView_GetSubItemRect(Sender.Handle,Item.Index ,i,LVIR_LABEL,@rect);    case i of    0:    begin      DrawText(ListView1.Canvas.Handle,PChar(Item.Caption),-1,rect,DT_VCENTER or DT_SINGLELINE or DT_END_ELLIPSIS or 0);    end;    1:    begin      DrawText(ListView1.Canvas.Handle,PChar(Item.SubItems[i-1]),-1,rect,DT_VCENTER or DT_SINGLELINE or DT_END_ELLIPSIS or 0);//出错 在这里    end;   end;  end;end;

可以正常访问

Delphi(Pascal) code

procedure TForm1.btn_1Click(Sender: TObject);begin  ShowMessage(ListView2.Items.Item[1].caption); ShowMessage(ListView2.Items.Item[1].SubItems[0]);end;

[解决办法]
设计期编辑的？？？ 那肯定有没添加的子项

比如，你看到这样的效果
A B C //表头
---------
A1 B1 C1
A2
A3 B2

则Item[1].SubItems[0]、 Item[1].SubItems[1] 、Item[2].SubItems[1]都是不存在的子项
访日时就会出错,即使没有值，你也要添加进去(New SubItem、caption可以不填)