URGENT: gtk_widget_draw(plot) memory allocation

[Peter Wurmsdobler <peter wurmsdobler ctm-france com>]

Hello,

As one of the users of your gtkplot widget set available on
http://magnet.fsu.edu/~ferguin/gtk I always encounter a problem 
with refreshing the screen. I use a plotlayout with some plots 
in there. In my application arriving data on a FIFO from a real
time module is added to a vector and the entire frame is moved 
left. Displaying this vector periodically by the function:

void figure_redraw( Figure_t * Figure )
    {
    GList * plot_list;

    plot_list = GTK_PLOT_LAYOUT(Figure->Plot_Layout)->plots;    
    while( plot_list != NULL )
        {
        gtk_widget_draw( GTK_WIDGET(plot_list->data), NULL );
        plot_list = plot_list->next;  
        }     
    }

generates then a scope like effect with signals moving from right 
to left. However, each time gtk_widget_draw is called on the
plot widget, memory is allocated. What can be done to avoid this?

Any hints are very much appreciated,
peterw
-- 
Dr. Peter Wurmsdobler

      CTM - Centre de Transfert des Microtechniques
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         E-mail: peter wurmsdobler ctm-france com

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