Planned maintenance has been done but it did not solve the problem. So work will continue on this and a new time for trying updates will be announced asap.
Dual display output with linuxfb
My Qt Version is Qt 5.10.1, and target OS is embedded Linux. I'm finding how to use multi-screen with Qt5, exactly I want make screen output to framebuffer directly.
As you know, linuxfb platform can use variable framebuffer via option 'fb'. (ex ./animatedtiles -platform linuxfb:fb=/dev/fb1)
But I cannot find how to use multi-framebuffer with linuxfb.
I found some example using multi framebuffer with 'qws' in Qt4, so i thought Qt5 also may have similar way.
Is there some way using multi framebuffer via linuxfb?
If not, can you tell me some other way using multi-screen?
Hi and welcome to devnet,
Can you explain your use of multiple screens ?
If you need window management, you will likely have to take a look at the QtWayland module.
This post is deleted!
@SGaist Hello. Thanks for reply.
Well, Xorg is already running on my system. I dont know how QtWayland works exactly, but I'll check it as your advice. thank you.
And about detail about my multi-screen environment, My embedded system connected to LCD and HDMI provided as /dev/fb0, /dev/fb1. so, I want print my Qt App screen to them each at once, in other words, I wanna works like "Mirror Mode".
So, I'm tried commands like below.
$ ./qtapp -platform linuxfb:fb=/dev/fb0:fb=/dev/fb1
$ ./qtapp -platform linuxfb:fb=/dev/fb0 linuxfb:fb=/dev/fb1
( ... )
I think they show my purpose clearly, although It looks like stupid..
I hope this reply answers your questions.
Well, if you have Xorg, why not use it in mirror mode ?
Doing so you won't have anything special to do from your application.