On 8/30/07, Marco Brambilla <[EMAIL PROTECTED]> wrote: > Hello everybody, > > Firs of all I'm a newbye both to GTK and to this mailing list, so I apologize > for the triviality of the post. > I'm writing a very simple application (language: C) which should grab frames > from a ccd camera and show them on the screen. > The ccd images are stored as a 1D array of unsigned char, single channel > grayscale images. > Looking around inside the API docs, I tried to use something like: > > pixbuf = gtk_pixbuf_new_from_data(.....); > image = gtk_image_new_from_pixbuf(pixbuf); > > The problem is that this way, the displayed image is messed up, since (for > what I understand) gtk_pixbuf_new_from_data needs > the three RGB channels. > Is there a easy way of displaying such an image "as is" (single channel) ? Or > must I convert it each pixel to > the a RGB triplet needed by gtk_pixbuf_new_from_data ? > Any advice is very welcome. > > Thanks in advance to everybody. > > Marco
You could possibly use gdk_image, but it's easier to use a pixbuf and just copy the grayscale value thrice into R, G and B. Remember to use the rowstride, and not the width of the image when creating a pointer to go from one row to the next. -Jim _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
