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Jump to content. You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality. Posted 15 January - AM.

PyQt: How to open and close dialog multiple times

So I have not changed anything in my PC hardware wise since my last GPU upgrade about a year ago and it worked like a charm, then I started to face some random crashing in various games not so long agoit just sends me straight to the desktop with no errors whatsoever. The crashes are random, it might crash after 1 minute or after 2 hours of gaming.

Also for the game CS:GO especially, it completely mess with the monitor when it crashes the monitor's power keeps flashing as if the PC is in sleep mode, and works only with a system restartnot just closes the game. I've looked up a lot of other threads on this forum and others as well to see solutions, so I know that I should attach the following :.

I've installed a new windows like days ago because I thought that might solve it, I completely formatted the hard, preformed a clean installation, updated everything from windows update, and downloaded the latest Nvidia driver as well. I believe that's all, wanna know what kind of steps I need to do to test or diagnose the problem I'm noob in such stuff as you guys can tell by my description :D. Hopefully someone can help, thanks a lot in advance. BC Malware Forum. Forum Rules.

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And I just ran the perfmon report and it's stuck at collecting data for 60secs and it's been more than 3 minutes. Posted 16 January - AM. If you are using multiple monitors, try launching the game with only one monitor attached. If that fixes it, consider blocking the update.

Thanks again. Posted 16 January - PM. Posted 17 January - AM. Well it's completely random if that's what you mean, sometimes it doesn't even crash at all. Posted 17 January - PM. Community Forum Software by IP. Javascript Disabled Detected You currently have javascript disabled.

Register a free account to unlock additional features at BleepingComputer. Welcome to BleepingComputera free community where people like yourself come together to discuss and learn how to use their computers.Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.

Please download a browser that supports JavaScript, or enable it if it's disabled i. I have been having an issue with Qt PyQT 5. I then set a property on the QNetworkReply like so: reply. This immediately crashes Qt without any sort of Python exception. The crash occuring in QtCore. From what I can tell, the issue seems to be that a reference to the QSaveFile is not kept and Python is garbage collecting it by the time the readyRead slot is called.

To test this, I created a list and first append the downloadFile to it in the same function where I create the request.

pyqt crashes without error

The crash no longer happens and in the finished slot all i have to do is remove it from the list to clean up. This is how I have been getting around this 'bug' for awhile now although I'm not sure if it's an actual bug or my own misunderstanding of how I'm supposed to do it in Python. However I came up with an alternative solution that doesn't require downloadFile to be added to a 'named' container first: reply.

This works! By wrapping the QSaveFile in a Tuple, it prevents the crash. And in the readyRead slot I can access it using self. For the heck of it though I tried wrapping it in a list: reply. Why can I not simply do: reply. I also tried attaching downloadFile as an attribute of the request object using: request. User, downloadFile. However the crash occurs later on as well when trying to retrieve downloadFile: self.

Here is a complete example demonstrating this problem in PyQt 5. Use the comments to switch between the working and crashing versions. From a quick look, it's likely that outFile gets destroyed at the end of doDownload since it's local to that function.

You could make it a member of your NetworkAccessManager class. Right, but I thought maybe setProperty would keep a reference to it. After all "reply" is also local to that function and does not get destroyed when leaving. Though I'm sure other names get binded to it in the signal connections somewhere.

And yes, making it an attribute of the class by creating a list of outFiles as I do in the example program provided, does indeed work and is how I have been doing it until I started refactoring some of my code and wanted to figure out a better way of doing it. And the cleanest way I have found thus far is wrapping it in a tuple in the setProperty call. But I'm still not sure why this works, but wrapping it in a list does not. Not that it particularly matters, I'm just curious what is going on behind the scenes.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. When generating a Python file using pyuic4 the resulting code crashes on exit. It does not matter if I start the application from the stand alone IPython Console or directly from Spyder.

My Environment: Crashes on: WinPython 2. But if I comment out this line the program does not Crash any more. It exits due to exceptions caused by the next few lines. It works also on my Winpython2. I can reproduce the bug on different machines, also Win7 64bit. On the long term i will try to migrate to python3. On the short term will use a older Winpython version or just accept the crash on exit.

Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. New issue. Jump to bottom. Copy link Quote reply. The Python Interpreter crashes at exit of Qt Applications. Error Message "python. QPlainTextEdit Demo. All changes made in this file will be lost! QGridLayout Demo self.

QPushButton Demo self. QLabel Demo self. QPlainTextEdit Demo self.

pyqt crashes without error

QLineEdit Demo self. QGridLayout self. AlignRight QtCore. AlignTrailing QtCore.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. The following code works for me. Note the check on QApplication already running and not executing the exit statement at the end. Running the following code from a file no issue raises but seems like the kernel is restarting when running the second time:. Also, should the wiki page we have about running PyQt applications be updated?

I mean, when do things work and when do they fail? I can reproduce if I paste the code in the console directly. I get a segfault when creating the widget:.

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My guess is the following: when QtWidgets. QApplication [] is called, a new python wrapper is created, but it wraps a singleton. QApplication [] is called:. Therefore the second wrapper ends up empty. Will take a look impact27 thanks! Works like a charm on Mac impact27! Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. New issue. Jump to bottom.

Labels component:IPython Console type:Bug v4. Milestone Sprint 02 - II.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project?

pyqt crashes without error

Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. MahdiGhajary - if you look into the output of logcat you'll most probably see the exact reason for the crash. There is no such thing "no error message".

We have our app running on.

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If you want someone to help you - please provide the output of the crash report in logcat. When I remove them and work with armeabi-v7a and x86 the android app works fine. My app crashes as soon as I start going into react-navigation and crashing in Samsung galaxy S7 having Android Version 6. Logcat Response:.

Can you guys try with a clean rn project?

Source code for pyqtgraph

Is it working there? If it is, then it is a misconfiguration with the project you have. We are running with rn. We recommend using StackOverflow where there are community incentives to help others or our Discord channel for questions. We can reopen this once there is a concrete bug report and this is a real issue, or even better: please send us a PR with a fix! MahdiGhajary - then do rn init, create the project, push it to github, give us a link and we'll try to run your project to confirm.

RN init works fine on my end and the produced app doesn't crash. The crash is occurring when I open the app and long press on the text for seconds, sometimes the app hangs up but doesn't crash.

As mentioned earlier as well, the app is not crashing in other android devices as I noticed till now, that is why it could be related to some specific device architecture configuration. Crash log is the same as attached previously.

We would like you guys to draw some attention to it, please? It seems all they care is closing issues and keeping them below even though lots of them are still relevant.

Fouppy That still mentions arm64 throughout the stack trace. Did you fully rebuild the app after removing those ABIs from build. The 64 bit build appears to be causing all sorts of issues for us. From segfaults to seemingly random NullPointerExceptions that never occurred before and cannot be reproduced, specifically on Galaxy S7 and Galaxy Tab S2. Got the same crash using latest react-native, and fresco version 1.

Downgrading Fresco to 1. I can't speak from personal experience since I used Hermes which does require an upgrade. Anyway I upgraded to 0.

Did you fix this issue? Hmm, it likely depends on your exact application and what you're doing. For ours, it's actually marginally faster. Well, on production at least.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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pyqt crashes without error

I'm trying to develop a software with PyQt, but I often get stuck on software crashes without debug information only the exit code 0xC I'm using QThread, and I wrote a system like this:. I know that PyQt is not thread-safe and that a wrong handling of variables gives crashes of my type, but I can't understand what is wrong with my code. My idea maybe wrong is that all serialThread methods are executed on the same thread, also if they are connected to a gui main thread.

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Is that wrong? Can you see the mistake I made? Is there a way to debug the code if there is a crash without other infos? I use PyCharm PyQt is thread-safe to the same extent that Qt is thread-safe.

The Qt docs will tell you which parts of their API are guaranteed to be so, and under what circumstances. Cross-thread signals are thread-safe, so calling the updatePB method in your example is okay. Your ConnDisconn method is not thread-safe, but that has got nothing to do with PyQt or Qt - it's just a consequence of how you wrote it. A thread-safe way of writing this would be to use a mutexlike so:. NB: if you're using any kind of IDE or debugger, and you are getting unexpected errors or crashes, your first step in diagnosing the problem should always be to test the code in a standard console.

Quite often, the IDE or debugger itself can be the cause of the problem, or may mask error messages comming either from Python or from underlying libraries, such as Qt. Learn more. Why does PyQt crashes without information? Asked 2 years, 6 months ago. Active 2 years, 6 months ago.

Viewed 11k times. SerialEnabled: self. Have you tried to run from the terminal?What's the right way to open and close dialog windows multiple times? At the moment I instantiate a dialog window on a clicked button signal, then close it with self.

So I can open the dialog only once. How can I open dialogs more than once? Thank you. How can I instantiate an object and then destroy it after closing the window? At the moment this is the only code which doesn't crash but it's still not what I'm looking for:.

The above simply closes the window but keeps the object alive. How can I kill the object? To destroy the object, assign something else to the variable. If you can supply a simple example of what you want to do it would help as you may want to use setModal or closeEvent.

Please download the whole application Cute Converter and have a look at what I'm currently doing. Because I don't know how to destroy another window after closing it, I have to reset all inputs every time I close it instead of creating a new window object when required. Read of address Have you prooved the regular del statement. When object is not referenced it is put for garbage collection. I know. Sorry, what is your question? The factorsFile is the xml file I pass to the CustomUnits dialog. The QInputDialog doesn't have all the widgets and inputs I need.

Quite the opposite, I do want to destroy it rather then to hide it because by hiding it I need to reset all inputs every time it's hidden. Nothing wrong with that, just doesn't look nice. And the 'del' crashes it. And it also crashes on every exit without any errors, have no clue why. Ah, OK. Then it sounds like something in the CustomWindow is referencing something it shouldn't be, so that when it gets garbage collected, it's causing problems.

Possibly a circular reference, such as having it and the MainWindow each setting the other as its 'parent' widget, or it and the MainWindow both referencing the same third widget, so that when one is destroyed taking its children with itthe other then crashes the interpreter when it tries to destroy the shared child.


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