Transparences Armstrong Linux, Compton

Technical Support
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1

Hi all,
I need to configure LXDE so that my windows will support transparencies.
I have read that to do this it is necessary to use other programs, so I wanted to try to install “compton” but I don’t know exactly where to find it and what procedure to use to install it. Does anyone know where it is possible to find it and have a guide to install it?

Thank you

2

Hello Gianluca

Welcome to the Toradex Community.

Compton is not included in our regular Toradex Build, you can do the OpenEmbedded and include Compton yourself.

Best regards
Jaski

3

Hi Jaski.tx,
thank for the reply.

There are any other programs that enable transparency? I don’t have to use “Compton”, I wrote it because I know it.

I’m developing an application with Qt and I need to have the transparent background in the buttons.

Thanks

4

Dear Gianluca,

take into account that the LXDE Window Manager has nothing to do with you developing a Qt application that has dialogs/windows with transparency, since this are just adjusted during programming as an opacity value. I mean, you can use the default Window manager and have your transparent windows in your Qt app.

5

Hi Alvaro,

So it would be a problem of Qt? Because when I enter the transparency in the button on a normal linux it works without problems

thanks for the reply

6

I’m unsure if you tried this in our systems or not. AFAIK it shouldn’t be an issue since Qt uses their own C++ based widgets system for windows.

Take into account that in order to add Qt to Toradex images you will have to generate an image from Yocto with Qt libraries added:

7

Thans for the reply.

I think there must be some bug with Qt.
Thanks for the suggestions

8

You are welcome. What exactly is not working in Qt? Which version of Qt are you using?