Problems working with 8bpp and 24bpp images

[high_flyer]

you will have to add an if statment and see if the painting is for 24 or 8bpp.
If the 24bpp then use the code you have, if its 8bpp, you have only 255 possible colors, so you will have to deal with that somewhere in your probgram, i.e limmiting the users to choose a color only from the 255 you use.

[SkripT]

... if its 8bpp, you have only 255 possible colors, so you will have to deal with that somewhere in your probgram, i.e limmiting the users to choose a color only from the 255 you use.

Exactly, the problem is that with the code that I have posted, although I pass it a valid color from the 255 (in my case a greyscale), it dosen't works

[SkripT]

Anybody knows how could I modify the code above to support 8bpp images?

[high_flyer]

Anybody knows how could I modify the code above to support 8bpp images?

I answered you, do you expect code?
You should think a bit your self...
In a case of gray scale you should use qGray().

[SkripT]

... if its 8bpp, you have only 255 possible colors, so you will have to deal with that somewhere in your probgram, i.e limmiting the users to choose a color only from the 255 you use.

Sorry high flyer I didn't undestand what you meant. Thanks.