Screen orientation

[Tomasz]

Hello!

I've got 320x240 3,5'' LCD with my ARM board. Board works with Linux and I'm using QT libs for my QT applications. I was wondering is there any simple way to change screen orientation for my QT apps? Should I change something in kernel or maybe in environment variables?

thanks in advance
best regards
Tomasz

[wysota]

It really depends on the device itself so it's impossible to answer this question on a general basis.

[Tomasz]

I can give more information about device, but I don't know what is important in this case.

thanks in advance
best regards
Tomasz

[wysota]

You should really start by looking into the reference manual of the device and its software to see what is actually supported. We can only make guesses here and the device vendor surely has a more complete knowledge of the device he produces.

[Tomasz]

OK. I'll check in reference more closely but the only thing I've found now is that there is tool in Qtopia named 'Rotation' and it changes screen rotation. Producer of a board says:

Note: sometimes you need to reboot Qtopia to see the rotation. It is a Qtopia utility and we hasn’t
made any change to it. In addition the rotation effect is implemented via Qtopia software and has
nothing to do with LCD drivers.

So I thought there is simple way to do it in QT.

thanks in advance
best regards
Tomasz

[binaural]

Compile qt for arm with : -qt-gfx-transformed and then run your app with ./app -qws -display transformed:Rot90 (or whatever rotation you need). Hope it helps.

[Tomasz]

I'll try that.

thanks
best regards
Tomasz