gcv.foreground = get_pixel_resource (g->dpy, g->cmap, "background", "Background");
g->erase_gc = XCreateGC (g->dpy, g->window, GCForeground|GCLineWidth|GCCapStyle,&gcv);
gcv.foreground = get_pixel_resource (g->dpy, g->cmap, "background", "Background");
g->erase_gc = XCreateGC (g->dpy, g->window, GCForeground|GCLineWidth|GCCapStyle,&gcv);