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x, y: array of integer;
......
filehandle:=fileopen('datafileName', fmopenread);
len:=fileseek(filehandle, 0, 2);
setlength(x, len div 4 + 1);
setlength(y, len div 4 + 1);
x自己看着办
fileseek(filehandle, 0, 0);
fileread(filehandle, y[0], len);
for i := 0 to len div 4 do
image.canvas.pixels[x[i], y[i]] := clred;