They would either disappear or be positioned at bogus coordinates.
The MINMAXINFO structure works with coords from the primary screen
then uses an "interesting" algorithm to adjust to secondary screen:
Say you have a primary screen with width=1000 and secondary screen
with width=2000, here's what you get when you set ptMaxSize to:
ptMaxSize.x | Size window gets in second screen
--------------------------------------------------
500 | 500
1000 | 2000
1001 | 2001
1100 | 2100
So basically you can't get any value between 1000 and 1999
How many people use the taskbar on a second display and maximimize
a frameless window anyway ?
Task-number: QTBUG-39537
Change-Id: Ic9b3120e7fb5a9a5d97828a2e44be02ae587b92e
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>