制作平面式列頭的Listview

　　新建一應用程序,在窗體上放置一個ListVIEw控件和一個按鈕控件,然後粘貼以下代碼,代碼中的有關API和常量參考Windows單元,方法是按是Ctrl鍵,然後單擊鼠標左鍵

unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ComCtrls;
type
TForm1 = class(TForm)
ListView1: TListVIEw;
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
const
LVM_GETHEADER = $1000 + 31;
var
hHeader: THandle;
style: dWord;
begin
hHeader := SendMessage(ListVIEw1.Handle, LVM_GETHEADER, 0, 0);
style := GetWindowLong(hHeader, GWL_STYLE);
style := style xor $2;
SetWindowLong(hHeader, GWL_STYLE, style);
SetWindowPos(ListVIEw1.Handle, Form1.Handle, 0, 0, 0, 0,SWP_NOZORDER or SWP_NOSIZE or SWP_NOMOVE or SWP_DRAWFRAME);
end;