[platform-dev] GTK3: prevent table header from getting focus

[Thomas Singer <ts-swt@xxxxxxxxxxx>]

Hello,

I've noticed that clicking a table header on CentOS 7.6 (GTK 3.22.30) 
will put the focus on this header cell. Setting the environment variable 
GTK_DEBUG to "interactive" and then launching our application reveals 
that in GTK3 table controls actually are "treeview"s that consist of 
"button"s for the table column headers. How to prevent these "button"s 
to get the focus?

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Best regards,
Thomas Singer
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syntevo GmbH
https://www.syntevo.com
https://www.syntevo.com/blog