+void BC_WindowBase::flicker(int n, int ms)
+{
+ int color = get_bg_color();
+ for( int i=2*n; --i>=0; ) {
+ set_inverse(); set_bg_color(WHITE);
+ clear_box(0,0, w,h); flash(1);
+ sync_display(); Timer::delay(ms);
+ }
+ set_bg_color(color);
+ set_opaque();
+}
+