QLineEdit will not change with QFileDialog (pyqt)

[Richie]

Some odd QLineEdit behavior... I want a QLineEdit to display the file path to an SQLite3 database.

txtdb is a QLineEdit

This changes the text perfectly:

txtdb.setText("foo")

txtdb.setText("foo")

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This prints the filename as a string as expected:

def getdb():
    return QtGui.QFileDialog.getOpenFileName(None, "Select your database file", "", "SQLite 3 Databases (*.sq3)")
 
print getdb()

def getdb():
    return QtGui.QFileDialog.getOpenFileName(None, "Select your database file", "", "SQLite 3 Databases (*.sq3)")

print getdb()

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Put them together...

txtdb.setText(getdb())

txtdb.setText(getdb())

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..and the text just does not change! Even

a=getdb()
txtdb.setText(a)

a=getdb()
txtdb.setText(a)

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is a total fail!

Anyone got any ideas how to fix this?

Rich

[wysota]

What is the type of "a" and what is the content of "a" in the last code snippet? Are you able to print a?

[Richie]

Hi,

Thanks for the reply.

Here's the most annoying thing: "print a" prints the file path perfectly! It just will not change the QLineEdit! I can't even think of a workaround.

[wysota]

But what is its type? It's probably not "QString instance", is it?

[Richie]

>>>> print type(a)
<class 'PyQt4.QtCore.QString'>

It was generated by QFileDialog::getOpenFileName, which returns a QString.

I'm stumped.

[Richie]

Solved! If I explicitly set it to a QString, it works perferctly.

a=QtCore.QString(getdb())
txtdb.setText(a)

a=QtCore.QString(getdb())
txtdb.setText(a)

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wysota, you're a hero. Many thanks!