再學GDI+[61] 路徑畫刷(1) - SetCenterColor、SetSurroundColor(2)

窗體文件:object Form1: TForm1
　Left = 0
　Top = 0
　Caption = 'Form1'
　ClIEntHeight = 258
　ClIEntWidth = 208
　Color = clBtnFace
　Font.Charset = DEFAULT_CHARSET
　Font.Color = clWindowText
　Font.Height = -11
　Font.Name = 'Tahoma'
　Font.Style = []
　OldCreateOrder = False
　Position = poDesktopCenter
　OnCreate = FormCreate
　OnPaint = FormPaint
　PixelsPerInch = 96
　TextHeight = 13
　object ButtonColor1: TButtonColor
　　Left = 24
　　Top = 225
　　Caption = 'ButtonColor1'
　　TabOrder = 0
　　OnClick = ButtonColor1Click
　end
　object ButtonColor2: TButtonColor
　　Left = 112
　　Top = 225
　　Caption = 'ButtonColor2'
　　TabOrder = 1
　　OnClick = ButtonColor2Click
　end
end