CAVEY GERARD wrote: >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) > Hmm, in that case you have to use back buffer (usual GdkPixmap). You have to paint all graphics to that pixmap and draw pixmap on expose event. Look at scribble-simple example, coming with gtk.
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