Set all Qt app's to use GTK+ font & theme settings

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For those of us that use Desktop Environments &/or Window Managers that use GTK+ , this fix is particularly helpful.

For those such as myself that run 1080p or higher screen resolutions on largish monitors it can be quite a strain on the eyes when you can't control the size of the fonts that an application uses.

This fix makes your Qt app's use your GTK+ theme (colours & such) & your chosen font settings.

How do you do it?

As root, create /etc/profile.d/

To do that you will need to start your favourite text editor as root .

You can achieve this by using the following command at the terminal $ prompt (swap medit to the text editor of your choice):

sudo medit /etc/profile.d/ 

Then copy the following into your text editor's new empty file:

## Following was created to make Qt app's use GTK2 
## font & theme settings:

export QT_STYLE_OVERRIDE='gtk2'

Save the file & reboot.


After saving the file & rebooting, I then, with trepidation, opened the Qt 5.5 program called PkgBrowser... It looked just like my other GTK+ app's on my Openbox system (there is no accounting for taste!). I was very happy.


Here is a picture of the Qt 5.5 PkgBrowser program open full screen on my 1080p Openbox (GTK2) box. It is using my custom dark theme & my large font settings. My eyes love it.


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