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Merge branch 'mcatanzaro/unparent' into 'master'

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Remove incorrect unparenting guidance from migration guide

See merge request GNOME/gtk!3050
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Matthias Clasen 2021-01-07 18:35:37 +00:00
commit f03acaf7ab
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docs/reference/gtk/migrating-3to4.md
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@ -264,14 +264,6 @@ therefore can no longer be used to break reference cycles. A typical sign
of a reference cycle involving a toplevel window is when closing the window
does not make the application quit.
A good rule to follow is: If you set a widget pointer with
gtk_widget_class_bind_template_child() in class_init(), you need to
unparent it in dispose(). The slight complication here is that you need
to respect the widget hierarchy while doing so. Ie if you set both `field1`
and `field2`, but `field1` is an ancestor of `field2`, then you only need
to unparent `field1` — doing so will remove the the entire subtree below
`field1`, including `field2`.
### Stop using GdkScreen
The GdkScreen object has been removed in GTK 4. Most of its APIs already