function GetShellFolders(strDir: string): string;
const
  regPath = '\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders';
var
  Reg: TRegistry;
  strFolders: string;
begin
  Reg := TRegistry.Create;
  try
    Reg.RootKey := HKEY_CURRENT_USER;
    if Reg.OpenKey(regPath, false) then begin
      strFolders := Reg.ReadString(strDir);
    end;
  finally
    Reg.Free;
  end;
  result := strFolders;
end;
      
{获取桌面}
      
function GetDeskeptPath: string;
begin
  Result := GetShellFolders('Desktop'); //是取得桌面文件夹的路径
end;
      
{获取我的文档}
      
function GetMyDoumentpath: string;
begin
  Result := GetShellFolders('Personal'); //我的文档
end;