Problems with Open-Source Downloads read https://www.qt.io/blog/problem-with-open-source-downloads and https://forum.qt.io/post/638946
QFileSystemWatch -checking the possibility
i am running python script from my qt c++ application using QProces, that python script indeed runs separate executable which will create the files in specified folder.
i need to throw an error or success message once separate executable completed its run.
The problem is like, when i watch that specific folder using QFileSystemWatcher. the file is created initially(with 0 kb) and i get the signal from QFileSystemWatcher directory change. But i need to get the signal once all the data is wriiten into that file(>15Mb) completely.
Is there any work around i can use with QFileSystemWatcher to acheive this
mchinand last edited by mchinand
Can you check the file size once your QProcess has completed? Or check the exit status of that executable once the QProcess has completed?
JonB last edited by
You don't say what your OS is, File system watching behaviour may vary across OSes. It's only promising to tell you when the file system changes (like creating a file), not necessarily when content/size changes. I don't think it does. You may get just one notification, at the beginning, not necessarily at the end.
You may have to use OS-specific calls to get that, if the OS even supports it.
Otherwise as @mchinand said it would be a lot easier if you are running your own processes and can just wait for them to exit to look at file size,
check the exit status of that executable once the QProcess has completed?
I am using Windows 10 .i need to get the notification once file content is fully written.
Rework your script that it returns once the file is completely written.
@mchinand from QProcess i just run the python script file. Inside the script file ANSYS process is called. If i can run directly from QProcess i could get the finished signal for the Qprocess but the requirement is to run it from python script that is the problem
But python runs until the script is finished, or?
You could also rename the output file once it is ready to the correct filename.
mchinand last edited by
@meganathan If you must call it from a python script, call
exit(your_process_exit_code)at the end of the script; passing along the exit code of your process.