Gdk::Pixbuf::create_from_data problem

[Aurélien KAMEL <aurelien kamel gmail com>]

Hi everyone,

I'm trying to create a Pixbuf from an array of pixels. The array size  
is width*height, with only one channel because it's a grayscale image.
I call create_from_data like this :

Gdk::Pixbuf::create_from_data(mp.getImg(i,j)->getSrc(), // guint8*  
array (1024*768)
				    Gdk::COLORSPACE_RGB,false,8,
				    mp.getImg(i,j)->getSizeX(), // 1024
				    mp.getImg(i,j)->getSizeY(), // 768
				    mp.getImg(i,j)->getSizeX()); // 1024

But when I save it to a file or display it I see my image repeated  
horizontally three times.

I guess it's a problem of channel number ?

How can I solve it ?

Thanks for your help,
Aurélien