[Gtk-sharp-list] From Gtk+ to Gtk#

[amartinez@atc.ugr.es]

Hello,
I'd like to know how can I translate this code
(http://cybernetics.freewebspace.com/gtk/improc/node14.html) from  from
Gtk+ to Gtk#. I paste the code below.

The main question is: how can I set/get the colors from every individual
pixel from a Pixbuf?

Thanks.

<code>
void draw_normal_border(GdkPixbuf *pb,int red,int green,int blue)
{
  int ht,wt;
  int i=0,j=0;
  int flag=0;
  int border=10; //10 pixels wide border.
  int rowstride=0;
  gchar *pixel;

  ht=gdk_pixbuf_get_height(pb);
  wt=gdk_pixbuf_get_width(pb);
  pixel=gdk_pixbuf_get_pixels(pb);
  rowstride=gdk_pixbuf_get_rowstride(pb);


  for(i=0;i<ht;i++)
    for(j=0;j<rowstride;j+=3)
      {
	flag=0;//reset flag every time.

	if(i< (border))
	  flag=1;
	else if(i > (ht-border))
	  flag=1;
	else if(j < (border)*3)
	  flag=1;
	else if(j > (wt-border)*3)
	  flag=1;


	if(flag==1)
	  {
	    pixel[i*rowstride+j+0]=red;
	    pixel[i*rowstride+j+1]=green;
	    pixel[i*rowstride+j+2]=blue;
	  }
      }
  return;
}
</code>