QFileDialog- Using getOpenFile

[JonB]

@artwaw
Yes I don't think it matters but since half the point of with open is that it closes the file for you it seems best not to close it. Though as I said I don't think it's getting that far here.

[LT-K101]

@jsulm When I click on the Browse Button to open the QDialog window for file selection and i click cancel it freezes the application and exit. This is really strange.

[jsulm]

@LT-K101 Then please read what @mchinand wrote.
And I already wrote this several times: use debugger!

[JonB]

@LT-K101 said in QFileDialog- Using getOpenFile:

When I click on the Browse Button to open the QDialog window for file selection and i click cancel it freezes the application and exit.

1. Use a debugger/print statements to see where execution is going.
2. Are there any further code lines in def Load_First_Certificate(self): after what you show?
3. Is there some other window in the application currently open other than the file chooser dialog when you close it?

[LT-K101]

@JonB I did print in the def Load_First_Certificate(self): function and it worked fine. I'm now using the code below to load the file as image.

    def Load_Second_Certificate(self):
            fname5, _ = QFileDialog.getOpenFileName(self, "Choose File", "", "All Files(*) ;; Images(*.jpeg)")
            pixmap = QPixmap(fname5, _)
            self.ui.Display_label_6.setPixmap(QPixmap(pixmap))
            self.ui.Display_label_6.repaint()

[jsulm]

@LT-K101 You don't check whether user cancelled the dialog.

[JonB]

@LT-K101 said in QFileDialog- Using getOpenFile:

I did print in the def Load_First_Certificate(self): function and it worked fine.

Then you should be able to see how far the code got to in execution when the " application exits as soon as i click on open file".

I suggest you answer my earlier question #3.

You should also make your new code check for cancellation, like your old code did, as @jsulm has remarked.

You have changed your code, and what it does, but said nothing about whatever problem it now has.

You do not check the result from pixmap = QPixmap(fname5, _), and I don't know if that _ is the same variable as on the line above it, which would be wrong if it is.

[LT-K101]

@jsulm I just did try to cancel and nothing happened, everything works fine. How to save the selected image file in database and display with the other text on the window is what i'm reading on now. Please any assistance?

[jsulm]

@LT-K101 said in QFileDialog- Using getOpenFile:

Please any assistance?

What kind of database? SQL? https://doc.qt.io/qt-5/qtsql-index.html

[JonB]

@LT-K101 said in QFileDialog- Using getOpenFile:

@jsulm I just did try to cancel and nothing happened, everything works fine.

That is truly remarkable, with your existing code.

            fname5, _ = QFileDialog.getOpenFileName(self, "Choose File", "", "All Files(*) ;; Images(*.jpeg)")
            pixmap = QPixmap(fname5, _)

So after the user clicks Cancel in the dialog, what is returned in fname5 and most importantly what in your code stops so that it does not try to load a QPixmap? Or do you mean it just seems to be OK when you continue ignoring the Cancel and try to load a QPixmap from "nothing"? Try first running this and picking a suitable file to load, then re-running it and pressing Cancel, that leaves the currently loaded pixmap as-is, does it?

[LT-K101]

@jsulm Yes I'm using SQL.

[jsulm]

@LT-K101 Start here: https://doc.qt.io/qt-5/qtsql-index.html

[LT-K101]

@JonB Oh! my bad. I meant when user clicks on the cancel the dialog window exits.

[JonB]

@LT-K101
Now I'm really lost. From the QFileDialog clicking either Cancel or selecting a file and clicking OK should close/exit that dialog window. Originally you said

but my application exits as soon as i click on open file

If you want help can you please state clearly whether this is still the case and/or when your application exits upon closing the file dialog.

[LT-K101]

@JonB @JonB Any help on how to display only file name instead of displaying file full path using the QFileDialog? Thanks in advance. Below is my code.

    
def Load_First_Certificate(self):
        self.fname1, ok = QFileDialog.getOpenFileName(self, "Upload Pdf File", "", "Pdf Files(*.pdf)")

        if ok:
            defaultPdf = os.path.split(self.fname1)
            self.ui.Pdf_lineEdit.setText(self.fname1)

[artwaw]

@LT-K101 If you look at the QString (or str in Python) documentation you will surely notice that there is split() method. So self.fname1.split('/').last() should do the trick. Why don't read documentation on the basic types you use?

[JonB]

@LT-K101

print(QFile(self.fname1).fileName())
print(QFileInfo(self.fname1).fileName())

Your code:

        self.fname1, ok = QFileDialog.getOpenFileName(self, "Upload Pdf File", "", "Pdf Files(*.pdf)")
        if ok:

Where do you get the idea that the second result is any kind of ok parameter, and that you should be looking at it for success?

[jsulm]

@LT-K101

self.ui.Pdf_lineEdit.setText(os.path.basename(self.fname1))

[JonB]

@jsulm
You are encouraging OP to mix native Python calls with Qt calls when no need to, grrr! Since QFileDialog.getOpenFileName() returns a Qt-type-path (right?), he must now go check up how os.path.... handles e.g. /s under Windows....

[LT-K101]

@JonB Sorry that was a function i wrote for my image upload function, if user does not upload an image then the default image should be an avatar. I copied it and forgot to delete the if statement. Thanks