# X-Window XPCE debugger

**URL:** <https://swi-prolog.discourse.group/t/x-window-xpce-debugger/3805>\
**Category:** Help!\
**Tags:** bug\
**Created:** [April 8, 2021, 1:10am UTC](https://swi-prolog.discourse.group/t/x-window-xpce-debugger/3805 "2021-04-08T01:10:15Z")\
**Posts on this page:** 1\
**Showing post:** 8

<div class="post-metadata">

**Author:** ![Boris](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/boris/32/7486_2.png) [@Boris](https://swi-prolog.discourse.group/u/Boris)\
**Post date:** [April 9, 2021, 6:53am UTC](https://swi-prolog.discourse.group/t/x-window-xpce-debugger/3805/8 "2021-04-09T06:53:49Z")

</div>

This half-solved my problem (on MacOS Big Sur with an up-to-date xQuartz installed). I still had to use the 4th argument of font(), so I have something like this now:

```prolog
fixed := font(screen, roman, 12, 'mononoki-12:Regular'), \
tt := font(screen, roman, 12, 'mononoki-12:Regular'), \
boldtt := font(screen, bold, 12, 'mononoki-12:Bold'), \

```

and it looks as intended.

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