====== QTIPS - Video.Rw=====

^Published By^Date^Version^Knowledge Level^Keywords^
|Sprezzatura Ltd|01 DEC 1990|2.021+|EXPERT|VIDEO.RW|

A discussion with RevTech identified the fact that VIDEO.RW is actually not
a subroutine but a function and returns a value reflecting the success of
the last operation. Thus far, the following codes have been identified
(where calling syntax is RESULT = VIDEO.RW(X1, Y1, X2, Y2, ACTION, IMAGE))

^Code^Meaning^
|0|OK|
|1|Out of memory during read attempt|
|2|Display not memory mapped (historical from Generic Rev days)|
|3|X1/X2/Y1/Y2 too small, X2/Y2 too big|
|4|X1/Y1 too big|
|5|Invalid ACTION|
|6|IMAGE doesn't fit (too big/small)|


(Volume 2, Issue 7, Page 7)