QT QFileDialog.getOpenFileName Cancellation crash

Asked May 27 '20 at 10:47

Active May 27 '20 at 11:04

Viewed 444 times

I'm a new user of Qt and I'm trying to fix a persistent crashing issue that happens in my 'open file' dialogue. Whenever I open a file dialogue to select a file and decide to hit cancel instead, it causes python to stop working. This is what the code looks like right now:

# get save file
savefile, _ = QtWidgets.QFileDialog.getOpenFileName(self, "Open file", "", "Files (*.mat)")
self.matlocation = savefile

I've tried using:

savefile, _ = QtWidgets.QFileDialog.getOpenFileName(self, "Open file", "", "Files (*.mat)")
if(!fileName.isEmpty()&& !fileName.isNull()){
self.matlocation = savefile
}

but this is still causing crashes. Am I missing something?

Thanks in advance.

Edit It's part of a larger function: So it's part of a function from a larger .py. The function as it stands starts by loading in a mat file:

def loadmat(self):
    from PyQt5 import QtWidgets
    import functions.plotting as plot


    # get save file
    savefile, _ = QtWidgets.QFileDialog.getOpenFileName(self, "Open file", "", "Files (*.mat)")
    self.matlocation = savefile


    # set mat location in GUI box
    self.gui.samplelocBox.setPlainText(self.matlocation)

edited May 27 '20 at 11:04

asked May 27 '20 at 10:47

Fairbz

Can you post more from this code snippet? From these two lines it is unclear what exactly is happening. – Rahul Shelke May 27 '20 at 10:55
Editted as above - hopefully this is more intuitive! – Fairbz May 27 '20 at 11:04
Did you try to write with `None` in place of `self`? – bogdyname May 27 '20 at 11:22
That would require changing almost every line of code in the program which it likely going to cause more issues. – Fairbz May 27 '20 at 12:38
1

@Fairbz provide a [mre] – eyllanesc May 27 '20 at 13:31

QT QFileDialog.getOpenFileName Cancellation crash

0 Answers0