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type 
  // ²åÖµ·½Ê½: ȱʡ(ÏßÐÔ²åÖµ)£¬ÁÙ½ü£¬ÏßÐÔ£¬Ë«Á¢·½  
  TInterpolateMode = (imDefault, imNear, imBilinear, imBicubic); 
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  // 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; &nb


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03.begin
04.hr:=createroundrectrgn(0,0,width,height,20,20);
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