Incrementally inserting GdkPixbuf into GtkTextBuffer

[Ferdinand Ramirez <ramirez ferdinand yahoo com>]

How do I insert an image into a GtkTextBuffer incrementally so that I can see that the image is loading 
instead of having to wait for some time with no apparent activity and seeing it all at once after a time lag?

I looked at GdkPixbufLoader, but am unable to figure out how to use this. 

I called gdk_pixbuf_loader_write within a while loop as and when the image array was getting data and then in 
the update callback, I called gdk_pixbuf_loader_get_pixbuf followed by gtk_text_buffer_insert_pixbuf. 
However, I keep getting an error that the assertion on GDK_IS_PIXBUF failed.

Note that I am able to insert a GdkPixbuf into GtkTextBuffer using gtk_text_buffer_insert_pixbuf, but this 
works only if I read the image fully before creating the pixbuf.

-Ferdinand