Also fixes bug for retina displays where events got missed because
stored value is the pixel value, but new one is the point value.
(close #10743)

refs #10222

ret cannot be NULL.

Also fix format string.

refs #1532

confusion: wanted min of max.

A better way would probably keep not asking and
seek and load index when 'slow' seekable.

To avoid collisions with existing touch gesture recognizers, a double-tap is needed to trigger a left-click mouse event

This fails in one of three attempts in Webkit and even more often in Gecko browsers

sms cannot be NULL here.

p_sys cannot be NULL here.

STANDARD_READ_ACCESS_INIT is an evil macro.
Also the forward-cookies setting could change, hence inherit -> create-get.