大侠帮我！
我的窗口该如何修改才能使窗口固定大小 固定尺寸不显示标题栏 该如何修改
再就是我    Picture.Data = {}想添加背景图片该如何做呢？

代码如下：
object dlglogin: Tdlglogin
  Width = 307
  Height = 151
  Position = poScreenCenter
  AutoSize = True
  BorderStyle = bsNone
  Caption = '登陆'
  Color = clBlue
  Font.Charset = GB2312_CHARSET
  Font.Color = clWindowText
  Font.Height = -12
  Font.Name = '宋体'
  Font.Style = []
  KeyPreview = True
  OldCreateOrder = False
  OnCreate = FormCreate
  PixelsPerInch = 96
  TextHeight = 12
  object Image1: TImage
    Left = 0
    Top = 0
    Width = 307
    Height = 151
    AutoSize = True
    Picture.Data = {}
  end