Re: drawing in a for-loop

[Carlo Agrusti <carlo-ag libero it>]

Ian Strascina ha scritto lo scorso 24/02/2005 23:18:
> OK, this is probably the stupidest post ever, but I need help drawing in 
> a for-loop within a callback function...  I've done this before, but for 
> some reason, I'm not getting expose events to refresh my 
> GtkDrawingArea... My code looks like this (using gtkmm, but doesn't 
> matter)...
>
>
> void mainWindow::button_callback()
> {
>   //GtkDrawingArea is called '* area'
>   width = GTK_WIDGET(area)->allocation.width;
>   height = " " ".height;
>
>   for (int i=0; i<200; i++)
>   {
>     gdk_draw_point(this->pixmap,GTK_WIDGET(area)->style->black_gc,i,i);
>     gtk_widget_queue_draw_area((GtkWidget *) area,0,0,width,height);
      while (gtk_events_pending ())
      {
        gtk_main_iteration ();
      }
>     delay-for-a-split-second();
>   }
> }
[..]