Looking for xshmfence example code

[Clemens Eisserer]

Hi Theo,

> shmevid = XShmGetEventBase(dpy) + ShmCompletion;

Thanks for the hint - I hadn't notiticed XShmPutImage is able to
trigger events by itself (bool send_event).
So I guess I don't need xshmfence at all,

Best regards, Clemens