No clue.
Widescreen is part of stock game code since 4.12, we don't touch that in modact.
Thank you for reply
Hm, that is a very bad news. 4.10.1 with external ecran wide2 works.
Now, I will test the behavior of 4.12, 4.12.1 and 4.12.2 on my computer without modact. Maybe, I will discover the reason of not working widescreen support on my computer with 4.12
If I will find the solution, I will post it here. For all, who have the same problem, like me.
PS: Okay, now I tested a fresh install of stock game 4.12, 4.12.1 and 4.12.2
Indeed, widescreen support (1920x1080) isn't working, although I let the widescreen button in menu on, how it is by default.
But what causes it? It seems, that I am the onliest with that problem? Very weird ...
###############################################################################Solution:I found the issue. I changed the resolution in conf.ini, as I did in 4.10.1 (I am new to 4.12.x). Now after a third clean install, I changed the resolution ingame at the appropriate menu and it works
Best regards
Vitamine!