Preview on SGI O2

[abaldoni CsR UniBo IT (Alessandro Baldoni mat.1010)]

Dear friends,
	I'm currently trying to port my GIMP extension (HaruspeX) on a SGI O2
workstation, but I'm having a lot of troubles with the previews.
I tried to set_xshm, push_colormap effortlessy.
If I get my previews working, my pixmaps crash. (I have to mix preview with pixmaps).
If my pixmaps work, my previews crash.
I receive a lot of 
BadMatch
and
BadColor
Here are a few lines from my app:

  gtk_init (&argc, &argv);
  gtk_rc_parse (gimp_gtkrc ());
  gdk_set_use_xshm (gimp_use_xshm ());

  gtk_widget_push_visual (gtk_preview_get_visual ());
  gtk_widget_push_colormap (gtk_preview_get_cmap ());

The code for creating my pixmaps is:

  GtkWidget *frame;
  GtkStyle *style;
  GtkWidget *pixmap;
  GdkPixmap *pix;
  GdkBitmap *mask;


  frame = gtk_frame_new (NULL);
  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
  gtk_container_border_width (GTK_CONTAINER (frame), 0);
  style = gtk_widget_get_style (frame);
  pix = gdk_pixmap_create_from_xpm_d (frame->window, &mask,
				&style->bg[GTK_STATE_NORMAL],
			      data);
  pixmap = gtk_pixmap_new (pix, mask);
  gtk_widget_show (pixmap);
  gdk_pixmap_destroy (pix);
  gtk_container_add (GTK_CONTAINER (frame), pixmap);


where data is gchar **data (XPM format)

Hope somebody will be able to help me. 

					Alessandro