QtonPi

There was a wrong path set up in the environment config
feb6b6ab-206d-43be-9db9-ac3593a75135-image.png

Hi and welcome to devnet,

Please take the time to reduce your code to the minimal amount required to trigger your situation. Posting your whole project like that without any explanation about it does not really motivate to go through it.

That said, your back and forth logic looks wrong, you re-create new widgets all the time rather than rally switching between them. That could be one of the issue as you might be hogging your device memory and then it has to start using swap which is way slower than RAM.

On a side note, please use proper casing for your class names. Having class all lower case makes your code way harder understand and reason about. Python has style guidelines that you really should follow to make your life and the life of the people checking your code easier.

@zy2nii said in E: Unable to find a source package for qt4-x11:

plz I have the same problem

With Qt4?! Why you want to use Qt4?

Well, that's your main issue: you just installed the tools but none of the Qt development packages.

I also have the same error when using a re-terminal device. But I'm still able to deploy my app with no issues. You should be able to deploy your app on your rpi board with base64 missing. If your app fails to launch, ssh to your board and launch the app manually from CLI. You will get the error messages.

You define your value as a string, which is where the result is collected.
Don't want a string, fix the software.

I compile app without
Window {
width: 640
height: 480
visible: true
}

Does this happen while running the compiled application?

QTimer is working. The problem is that I didn't call the function.

@SGaist

its ok thankyou

@Maanas
Of adding layouts and then widgets to a QWidget? No, you must know perfectly well how to do that. There's nothing to say.