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Is there a cross-platform function in Qt that is equivalent to the MoveFile function in Windows and the mv command in Linux?
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You have to first create the directory ( QDir::mkpath will create the full path) and then the file ( QFile::open ).
abk file to load it into the address book. void AddressBook::loadFromFile() { QString fileName = QFileDialog::getOpenFileName(this, tr("Open Address Book"), "", tr("Address Book (*. abk);;All Files (*)")); On Windows, for example, this function pops up a native file dialog, as shown in the following screenshot.
To write text, we can use operator<<(), which is overloaded to take a QTextStream on the left and various data types (including QString) on the right: QFile file("out. txt"); if (! file.
It is also better use QFile::rename(const QString & oldName, const QString & newName) to rename a file. When using QDir::rename, If oldName is a file (not a directory) that can't be renamed right away, Qt will try to copy oldName to newName and remove oldName.
Sure, QDir::rename() following the old Unix / POSIX tradition of calling this rename.
Which makes sense if you think of a file with its complete path: the underlying inodes just get assigned a different path/file label.
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You would use QDir::rename() but be beware of the special cases when rename() can fail:
On most file systems,
rename()fails only ifoldNamedoes not exist, ifnewNameandoldNameare not on the same partition or if a file with the new name already exists. However, there are also other reasons whyrename()can fail. For example, on at least one file systemrename()fails ifnewNamepoints to an open file.
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