How to isolate my Qt program in raspberry pi!?

[MAthias_Va]

@jsulm yes Raspbian Stretch

[jsulm]

@MAthias_Va And what is your desktop environment (is it a standard Raspbian set-up?)?

[MAthias_Va]

@jsulm yes I never Change it

[jsulm]

@MAthias_Va Then it is X11. What display do you use?

[MAthias_Va]

@jsulm I use the standard Touch display supplied with Raspberry board

[jsulm]

@MAthias_Va Did you try any other Qt based app like VLC?
What Qt version do you use?

[MAthias_Va]

@jsulm VLC, no I didn't! I use Qt5.10.1

[jsulm]

@MAthias_Va said in How to isolate my Qt program in raspberry pi!?:

I use Qt5.10.1

Is it the one provided by Raspbian?

[MAthias_Va]

@jsulm No I didn't install Qt in my Raspberry

[jsulm]

@MAthias_Va Then I guess you're doing cross compilation with cross compiled Qt?
You could try this: install Qt and Qt-dev packages from Raspbian on your device and build your app there. Then try to run it to see whether it behaves in same way or not.

[MAthias_Va]

@jsulm Ok I will, thanks

[MAthias_Va]

@jsulm said in How to isolate my Qt program in raspberry pi!?:

what do you mean with:

and build your app there

Do mean the destination folder where I sent the compiled file should be there!

[jsulm]

@MAthias_Va No, I mean build your app directly on your device

[MAthias_Va]

So I Installed Qt Creator using this commands on my Raspberry:

sudo apt-get install qt4-dev-tools
sudo apt-get install qt5-default
sudo apt-get install qtcreator

I build a simple program on it to open an ApplicationWindow, but I didn't get the same problem on this case!!

I couldn't build my same program with Qt installed on my raspberry as it is older version than I use on PC!

Any Advice?

[jsulm]

@MAthias_Va said in How to isolate my Qt program in raspberry pi!?:

qt4-dev-tools

This is for Qt4. I guess you want to use Qt5? Then install the Qt5 version.

[MAthias_Va]

@jsulm on My Raspberry now I have Qt5.7.1

[jsulm]

@MAthias_Va And does your app build now? If not - do you use Qt5 Kit?

[MAthias_Va]

@jsulm yes it is! I can build with it

[MAthias_Va]

It looks like I am not the only one faced this problem!

I found this similar situation https://www.qtcentre.org/threads/68141-Using-touch-screen-affects-both-qt-application-and-desktop

and there it say I might avoid it by not showing the desktop :)

[oniongarlic]

If you built Qt for Raspberry it will default to eglfs platform plugin.
Try starting your app with the "-platform xcb" parameter to use the X11 platform if you are running your app from X.