Problems working with 8bpp and 24bpp images

[SkripT]

Another time thanks a lot Cesar, your suggestions are very helpfully It's a great idea to calculate a similar color in the table using the distance between two points, I didn't remember that function . I will try it and I comment the results.

PD: did you forget to calculate the distance using squares in the function 'obtenirIndexColor'?

diff = dR * dR + dG * dG + dB * dB;

diff = dR * dR + dG * dG + dB * dB;

To copy to clipboard, switch view to plain text mode 

The results of calculating the distance multiplying each term with itself are the same that calculating it as I did with the absolute value, no?