Qt5: how to design a translucent GUI using an image file

designed a translucent background image on GIMP, loaded the png file on qresource and using some Qt attributes was able to make the original window transparent,
the output result looks like this

Qt 5 code showing how to use Linguist and how to install user defined font

using QFontdatabase and QFont we can use font that is not install on our system on a Qt5 application, we simply load the font using QFile and add it font database.