Lubuntu: How to change font size in QT applications

Fonts in QT apps in Lubuntu on high-res displays are too small.

Solution is to add these 2 lines at the end of .basrc:

export QT_QPA_PLATFORMTHEME="qt5ct"
unset QT_STYLE_OVERRIDE

Then install qt5ct:

$ sudo apt-get install qt5ct

Then start qt5ct and configure font size to match your display resolution.

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