How to fix ugly fonts in Qt-based applications

I was using Qt Creator and tried to change the editor’s font to Monaco, 9. But hey, Monaco is not that ugly:

So I googled a way to fix for this problem, and found the fix at Arch Linux forums. You’ll need to create a file called .fonts.conf in your home directory with this content:

[sourcecode language=”xml”]
<?xml version=’1.0′?>
<!DOCTYPE fontconfig SYSTEM ‘fonts.dtd’>
<fontconfig>
<match target="font" >
<edit mode="assign" name="rgba" >
<const>rgb</const>
</edit>
</match>
<match target="font" >
<edit mode="assign" name="hinting" >
<bool>true</bool>
</edit>
</match>
<match target="font" >
<edit mode="assign" name="hintstyle" >
<const>hintslight</const>
</edit>
</match>
<match target="font" >
<edit mode="assign" name="antialias" >
<bool>true</bool>
</edit>
</match>
</fontconfig>
[/sourcecode]

I closed Qt Creator and reopened it. The result was this: