File Mapping? How can I do it using Qt?

[fem_dev]

Hi, I would like to do a File Mapping (like mmap on Unix and CreateFileMapping on Windows) using Qt in a plataform independend way.

I saw that it is possible in a 2007 post of Qt Blog using the Qt QFile map() method.
https://www.qt.io/blog/2007/10/15/file-mapping

But I'm not found this map() documentation in the Qt 5.13 QFile official documentation:
https://doc.qt.io/qt-5/qfile.html

So now I have 2 doubts:
a) Where is the QFile map() documentation?
b) Can QDataStream object replace this QFile map() method? I mean, can I use QDataStream to read/write data in a disk file in any given file position without load it entirely on memory?

[SGaist]

Hi,

Because it's in a parent class. See QFileDevice.

When looking for a symbol that is not shown in the class documentation. Try the List of all members, including inherited members link.

[fem_dev]

@sgaist thank you!