Make the xosd window visible
#include <xosd.h>
int xosd_show (xosd* osd);
Call xosd_show to redisplay the data that has been previously displayed using xosd_display(3).
The on-screen display object to act on.
On success, a zero is returned. On error, -1 is returned.
xosd_init(3), xosd_display(3), xosd_hide(3).