How to use user defined fonts in QT5 Widgets

I will demonstrate on how to use font that i included on my resource file. This simple application uses QFileSystemMode and QTreeView to create a simple widget and dump all the file on the system. I will use Amharic font file that will only show Amharic words.

[DaScrabi]

In short forme: instead of using QFile("fontFileName.tff");
Write:
;))

[dailydols]

Is there a way to ignore installed system fonts in Windows?