drawing graphics

[CAVEY GERARD <GERARD CAVEY sgam com>]

Hello
My app uses a GtkDrawingArea to display some data (lines & texts)  drawn
with gdk drawing primitives.
the main drawing function is linked with the expose_event of my drawing area

  gtk_signal_connect (GTK_OBJECT (drawingarea1), "expose_event",
  		GTK_SIGNAL_FUNC(DrawData),this);

thus my system is not very effective and my function is called for each
refresh request...
what would be the most effective solution ?
 or where could i put the draw code so that it could be called only once ?
maybe i should use something else rather than drawing area???
(btw: my drawing function reads a hard drive file that s why i would avoid
to call it so much)
does someone have an idea to improve my app ?
thanks

regards



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