How to run a QProcess in QThread without destroying the QThread

[anda_skoa]

In your original code your UI became unresponsive because you blocked the main thread in waitForReadyRead()

In Qt most I/O is asynchronous for the very purpose of not blocking the main thread

Also, you don't need a lambda here

connect(buttonsearch, &QPushButton::clicked, [this]() {process(); });

connect(buttonsearch, &QPushButton::clicked, [this]() {process(); });

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you can directly connect to the process() function

connect(buttonsearch, &QPushButton::clicked, this, &mainWindow::process);

connect(buttonsearch, &QPushButton::clicked, this, &mainWindow::process);

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Cheers,
_