如何取得:Mouse雙擊在listview的哪一列?(得到列值)

Question

unit Unit1;interfaceuses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, ComCtrls,commctrl;
//要添加commctrl单元
type
  TForm1 = class(TForm)
    Button1: TButton;
    ListView1: TListView;
    procedure ListView1DblClick(Sender: TObject);
    procedure ListView1MouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
  private
    { Private declarations }
  public
    { Public declarations }
  end;var
  thex,they:integer;
  Form1: TForm1;implementation{$R *.DFM}procedure TForm1.ListView1DblClick(Sender: TObject);
var ls:LV_HITTESTINFO;
begin
ls.pt.x:=thex;
ls.pt.y:=they;
ListView_SubItemHitTest(listview1.Handle,@ls);
//showmessage(inttostr(ls.pt.x));
showmessage('你双击的是第'+inttostr(ls.iSubItem)+'列');
end;procedure TForm1.ListView1MouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
thex:=x;
they:=y；
end;end.