Could a process running in background mode interact with the GUI??

[locke]

Hi everyone,

Thanks in advance!!

I'm trying to execute a function in background mode:

QFuture<void> future = QtConcurrent::run(this, &MainWindow::myFunction);  //myFunction has no input parameters, and returns void

QFuture<void> future = QtConcurrent::run(this, &MainWindow::myFunction);  //myFunction has no input parameters, and returns void

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The problem is that, if myFunction doesn't interact with the GUI, then it works. But if it interacts with some element shown on the main window (like a graph, to replot it) then a running time error is thrown.

Is it a normal behavior? How could I execute a function in background mode that interacts with elements on the GUI?

Thank you!

[squidge]

It's normal behavior. Use signals/slots to interact with the main thread which will then interact with the elements on the GUI on the other threads behalf.