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type
// ²åÖµ·½Ê½: ȱʡ(ÏßÐÔ²åÖµ)£¬ÁÙ½ü£¬ÏßÐÔ£¬Ë«Á¢·½
TInterpolateMode = (imDefault, imNear, imBilinear, imBicubic);
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// ÉèÖÃË«Á¢·½²åÖµµÄбÂÊ¡£È±Ê¡ÖµÎª-0.75
procedure SetBicubicSlope(const Value: Single);
// Ëõ·ÅͼÏñ£¬IpMode²åÖµ·½Ê½
procedure ImageScale(Dest: TImageData; const Source: TImageData;
IpMode: TInterpolateMode = imDefault); overload;
// Source·Ö±ð°´±ÈÀýScaleXºÍScaleYËõ·Åµ½DestµÄ(x,y)×ø±ê£¬IpMode²åÖµ·½Ê½
procedure ImageScale(Dest: TImageData; x, y: Integer; const Source: TImageData;
ScaleX, ScaleY: Single; IpMode: TInterpolateMode = imDefault); overload;
// TGraphic¶ÔÏóËõ·Åµ½Dest
procedure ImageScale(Dest: TImageData; const Source: TGraphic;
IpMode: TInterpolateMode = imDefault); overload;
procedure ImageScale(Dest: TImageData; x, y: Integer; const Source: TGraphic;
ScaleX, ScaleY: Single; IpMode: TInterpolateMode = imDefault); overload;
// TGpBitmap¶ÔÏóËõ·Åµ½Dest
procedure ImageScale(Dest: TImageData;
const Source: TGpBitmap; IpMode: TInterpolateMode = imDefault); overload;
procedure ImageScale(Dest: TImageData; x, y: Integer;
const Source: TGpBitmap; ScaleX, ScaleY: Single;
IpMode: TInterpolateMode = imDefault); overload;
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type
TInterpolateProc = procedure;
var
BicubicTable: Pointer;
BicubicSlope: Single;
BilinearTable: Pointer;
(*****************************************************************************
* typedef UINT ARGB *
* ARGB GetBilinearColor(int x(*256), int y(*256), void* Scan0, UINT Stride) *
* *
* int x0 = x / 256


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procedure TForm3.WMCtr ......

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procedure TForm1.Button1Click(Sender: TObject);
Var
  Num: Integer;
Begin
  Try
    Num:=StrToInt(Edit1.Text);
    Edit2.Text:=IntToStr(Num*Num);
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