QSocketNotifier - How to use it to watch a file? - linux

I want my c++ appli开发者_Python百科cation to watch for changes in a file called "aaa". I want to do it by QSocketNotifier. I didn't understand from the documentation how to do it. Can you please send me a sample?

10!

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Use QFileSystemWatcher. It performs all the inotify hackery for you.

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The QSocketNotifier class works with sockets, not files. Since it apparently uses select(2) under the hood, you might get away with passing it a file descriptor returned by inotify_init() and trick it into monitoring file changes that way. That's highly doubtful, though.