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List: pykde
Subject: [PyQt] why QCompleter(parent) is TransferBack?
From: Yuya Nishihara <yuya () tcha ! org>
Date: 2014-11-29 9:04:36
Message-ID: 20141129180436.398e64c283b1e1ea1df16ea4 () tcha ! org
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Hi,
I'm getting random crash around QCompleter. The production code is not simple
but it roughly does:
app = QApplication([])
window = QMainWindow()
lineedit = QLineEdit(window)
window.setCentralWidget(lineedit)
completer = QCompleter(window)
completer.setModel(QDirModel(completer))
lineedit.setCompleter(completer)
window.show()
app.exec_()
I looked into PyQt source and found that QCompleter(parent) is not annotated
as TransferThis.
QCompleter(QObject *parent /TransferBack/ = 0);
QCompleter(QAbstractItemModel *model, QObject *parent /TransferThis/ = 0);
QCompleter(const QStringList &list, QObject *parent /TransferThis/ = 0);
So I've changed the above code as follows, and it seems the crash no longer
happen.
window.setCentralWidget(lineedit)
-completer = QCompleter(window)
+completer = QCompleter([], window)
completer.setModel(QDirModel(completer))
Is there a reason for setting TransferBack only to QCompleter(parent) ?
Platform: Debian sid amd64
PyQt: 4.11.2+dfsg-1
Regards,
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