# QFontMetrics change, min now 5.11

**URL:** https://discourse.kitware.com/t/qfontmetrics-change-min-now-5-11/328
**Category:** Build & Install
**Created:** [October 21, 2019, 4:06pm UTC](https://discourse.kitware.com/t/qfontmetrics-change-min-now-5-11/328 "2019-10-21T16:06:58Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![aron.helser](https://discourse.kitware.com/user_avatar/discourse.kitware.com/aron.helser/32/149_2.png) [@aron.helser](https://discourse.kitware.com/u/aron.helser)
#### Post date: [October 21, 2019, 4:06pm UTC](https://discourse.kitware.com/t/qfontmetrics-change-min-now-5-11/328/1 "2019-10-21T16:06:58Z")

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Just a heads up, probably - the new use QFontMetrics::horizontalAdvance in qtUIManager means the minimum QT version is now 5.11.

I bumped into this and thought it was a good FYI…

-Aron

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### Author: ![ben.boeckel](https://discourse.kitware.com/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.kitware.com/u/ben.boeckel)
#### Post date: [October 21, 2019, 8:19pm UTC](https://discourse.kitware.com/t/qfontmetrics-change-min-now-5-11/328/2 "2019-10-21T20:19:43Z")

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Was the `find_package` updated to mention this?

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### Author: ![aron.helser](https://discourse.kitware.com/user_avatar/discourse.kitware.com/aron.helser/32/149_2.png) [@aron.helser](https://discourse.kitware.com/u/aron.helser)
#### Post date: [October 21, 2019, 8:36pm UTC](https://discourse.kitware.com/t/qfontmetrics-change-min-now-5-11/328/3 "2019-10-21T20:36:22Z")

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> [@ben.boeckel](#):
>
> `find_package`

After a quick look, I don’t see the QT version mentioned in find\_package - just required components. Seems like we need to add something?

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### Author: ![Haocheng\_Liu](https://discourse.kitware.com/user_avatar/discourse.kitware.com/haocheng_liu/32/36_2.png) [@Haocheng\_Liu](https://discourse.kitware.com/u/Haocheng_Liu)
#### Post date: [October 21, 2019, 8:51pm UTC](https://discourse.kitware.com/t/qfontmetrics-change-min-now-5-11/328/4 "2019-10-21T20:51:57Z")

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Aron is right that we never not mention the Qt version in code base tough. CMB superbuild wiki is [updated](https://gitlab.kitware.com/cmb/cmb-superbuild/merge_requests/536). Since we do find\_package for Qt in several places such as smtk + almost all sessions, is there a centric way to do so?

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### Author: ![aron.helser](https://discourse.kitware.com/user_avatar/discourse.kitware.com/aron.helser/32/149_2.png) [@aron.helser](https://discourse.kitware.com/u/aron.helser)
#### Post date: [October 23, 2019, 2:08pm UTC](https://discourse.kitware.com/t/qfontmetrics-change-min-now-5-11/328/5 "2019-10-23T14:08:18Z")

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We decided to do a QT version check and still allow 5.10:  
[https://gitlab.kitware.com/cmb/smtk/merge\_requests/1773](https://gitlab.kitware.com/cmb/smtk/merge_requests/1773)