anchor.diff:    SIZE_FRAME: TRect     = (Left: 4; Top: 28; Right: 5; Bottom: 5); // ߿ĳߴ
     SPACE_AREA            = 3;          // ֮
     SIZE_RESICON          = 16;         // ԴͼĬϳߴ
  +
   
   
   function BuildRect(L, T, W, H: Integer): TRect; inline;
  
positive.code: interface
  
  uses
    Classes, windows, Controls, Graphics, Forms, messages, pngimage;
  
  const
    WM_NCUAHDRAWCAPTION = $00AE;
  
  type
    TFormButtonKind = (fbkMin, fbkMax, fbkRestore, fbkClose, fbkHelp);
    TSkinIndicator = (siInactive, siHover, siPressed, siSelected, siHoverSelected);
  
    TskForm = class
    private
  
negative.code:     FIcon: TIcon;
      FIconHandle: HICON;
  
      // λ״ֻ̬صλãнϵͳ
      FPressedHit: Integer;     // ʵʰµλ
      FHotHit: integer;         // ¼ϴεĲλ
  
      function GetHandle: HWND; inline;
      function GetForm: TCustomForm; inline;
  