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var
x,y:Integer;
cColor:TColor;
begin
  for y:=0 to Image1.Height-1 do
    for x:=0 to Image1.Width-1 do
      cColor:=Image1.Canvas.Pixels[i,j];
end;
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var
P:array[0..100] of PByteArray;//ÏñËØÊý×é        
y:Integer;
begin
  for y:=0 to Bmp.Height-1 do
  begin
    P[y]:=Bmp.ScanLine[y];//½«Í¼Æ¬ËùÓÐÏñËØÖµ´æÈëP
  end;
end;
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var
P:array[0..100] of PByteArray;//ÏñËØÊý×é
x,y:Integer;
begin
  for y:=0 to Bmp.Height-1 do
  begin
    P[y]:=Bmp.ScanLine[y];//½«Í¼Æ¬ËùÓÐÏñËØÖµ´æÈëP
  end;
  y:=0;//µÚÒ»ÐÐ
  x:=1;//µÚ¶þÁÐ
  P[y][x*3]:=255;//ÏñËØµÄµÚÒ»×Ö½Ú
  P[y][x*3+1]:=255;//ÏñËØµÄµÚ¶þ×Ö½Ú
  P[y][x*3+2]:=255;//ÏñËØµÄµÚÈý×Ö½Ú
end;
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