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Add section about gtk_widget_set_app_paintable

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Jaap aarts 2021-06-23 13:08:06 +00:00 committed by Emmanuele Bassi
parent fca19e72ad
commit 02893e37d3
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docs/reference/gtk/migrating-3to4.md
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@ -99,6 +99,12 @@ you should stop using `GdkVisual` APIs, since this object not longer
exists in GTK 4. Most of its APIs are deprecated already and not
useful when dealing with RGBA visuals.
### Stop using `gtk_widget_set_app_paintable`
This is gone in GTK4 with no direct replacement. But for some usecases there
are alternatives. If you want to make the background transparent, you can set
the background color to, for example, `rgba(255, 255, 255, 0)` using CSS instead.
### Stop using `GtkBox` padding, fill and expand child properties
GTK 4 removes these [class@Gtk.Box] child properties, so you should stop using
@ -1338,3 +1344,4 @@ of tree models, and widgets instead of cell renderers.
To learn more about the new list widgets, you can read the [List Widget
Overview](#ListWidget).