DELPHI 获取特殊系统目录

利用Api函数，现在我介绍两个Api函数，利用他们就可以轻松简单的获取这些特殊系统目录。
Function SHGetSpecialFolderLocation(hwndOwner: HWND; nFolder: Integer;
var ppidl: PItemIDList): HResult; stdcall;
Function SHGetPathFromIDList(pidl: PItemIDList; pszPath: PChar): BOOL;stdcall;
其中由nFolder参数指定的就是各个特殊系统目录：
CSIDL_DESKTOP：毫无疑问这就是桌面；
CSIDL_DRIVERS：我的电脑；
CSIDL_FAVORITES：收藏夹；
CSIDL_STARTUP：开始菜单；
CSIDL_NETWORK：网上邻居；
uses shlobj;
var
pitem:PITEMIDLIST;
s:string;
begin
shGetSpecialFolderLocation(handle,CSIDL_DESKTOP,pitem);
setlength(s,100);
shGetPathFromIDList(pitem,pchar(s));
end;
vName:= copy(s,1, Length(s)-pos('桌面',s)-15)+'\'; //////减15是为了减去 后面的 “#0#0.......”
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方法一：通过访问注册表 
uses registry; 
procedure Tsysdirfrm.FormShow(Sender: TObject); 
var reg:Tregistry; 
begin 
reg:=Tregistry.create;    reg.RootKey:=HKEY_USERS; 
reg.OpenKey('\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders',false); 
listbox1.items.add(reg.readstring('Desktop')) ;//桌面目录 
listbox1.items.add(reg.readstring('Fonts'));//字体目录 
listbox1.items.add(reg.readstring('NetHood')) ;//网上邻居 
listbox1.items.add(reg.readstring('Personal'));//我的文档目录 
listbox1.items.add(reg.readstring('Programs'));//开始菜单程序目录 
listbox1.items.add(reg.readstring('Recent')) ;//存放用户最近访问文件快捷方式的目录 
listbox1.items.add(reg.readstring('SendTo'));//发送到目录 
listbox1.items.add(reg.readstring('Start Menu'));//开始菜单目录 
listbox1.items.add(reg.readstring('Startup'));//开始菜单启动项目录 
listbox1.items.add(reg.readstring('Favorites')) ;//收藏夹目录 
listbox1.items.add(reg.readstring('History'));//网页历史目录 
listbox1.items.add(reg.readstring('Cookies'));//cookies目录 
listbox1.items.add(reg.readstring('Cache')) ;//缓存目录 
listbox1.items.add(reg.readstring('AppData'));//应用程序数据目录 
listbox1.items.add(reg.readstring('PrintHood')) ;//打印目录 
reg.CloseKey ; 
reg.free; 
end; 
方法二：使用API函数SHGetSpecialFolderLocation和SHGetPathFromIDList 
uses shlobj; 
procedure TForm1.Button1Click(Sender: TObject); 
var pidl: PItemIDList; 
FavPath: array[0..MAX_PATH] of char; 
temp:array [1..17] of integer; i:byte; 
begin 
temp[1]:=CSIDL_DESKTOP; //桌面 
temp[2]:=CSIDL_DESKTOPDIRECTORY ; //桌面目录 
temp[3]:=CSIDL_FONTS ; //字体目录 
temp[4]:=CSIDL_NETHOOD ; //网络邻居 
temp[5]:=CSIDL_PERSONAL ; //我的文档目录 
temp[6]:=CSIDL_PROGRAMS ; //开始菜单程序目录 
temp[7]:=CSIDL_RECENT ; //存放用户最近访问文件快捷方式的目录 
temp[8]:=CSIDL_SENDTO ; //"发送到"目录 
temp[9]:=CSIDL_STARTMENU ; //开始菜单目录 
temp[10]:=CSIDL_STARTUP ; //开始菜单启动项目录 
temp[11]:=CSIDL_FAVORITES ; //收藏夹目录 
for i:=1 to 17 do 
begin 
SHGetSpecialFolderLocation(Handle, temp[i], pidl); 
SHGetPathFromIDList(pidl, favpath); 
listbox1.Items.Add(StrPas(FavPath)); 
end; 
end;
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uses shlobj;
procedure Tgongzhi1.dsbkSpeedButton1Click(Sender: TObject);
var vPath, vName,s: string;
    pitem:PITEMIDLIST;
begin
if DBGrid1.Enabled=False then
   MessageBox(handle,'请先查询再进行导出操作！','友情提醒：',mb_ok+MB_ICONASTERISK)
else
begin
if Application.MessageBox('确定要导出EXCEL表？ ','友情提醒:',MB_YESNO+MB_ICONQUESTION)   =   IDYES   then
begin
   shGetSpecialFolderLocation(handle,CSIDL_DESKTOP,pitem);
   setlength(s,100);
   shGetPathFromIDList(pitem,pchar(s));
   vPath:= copy(s,1, Length(s)-pos('桌面',s)-15)+'\';
//vPath := 'C:\Documents and Settings\Administrator\桌面\';
   vName :='工资汇总'+formatdatetime('yyyy-mm-dd',DateTimePicker1.date)+'~'+formatdatetime('yyyy-mm-dd',DateTimePicker2.date);
if DBGrid1.Enabled=False then
     MessageBox(handle,'请先查询再进行删除操作！','友情提醒：',mb_ok+MB_ICONASTERISK)
else
    savexls(ADOQuery1, VName, vPath);
    MessageBox(handle,PChar('文件: '+vName+'； 路径：'+vPath+'； 导出成功！'),'友情提醒：',mb_ok+MB_ICONASTERISK)
end;
end;
end;