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docs: Add note on command line arguments

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We don't parse them any more, and developers should stop using them when
migrating from GTK3 to GTK4.
This commit is contained in:
Emmanuele Bassi 2020-09-10 17:53:50 +01:00
parent aff788e583
commit 790733673f
1 changed files with 9 additions and 0 deletions
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docs/reference/gtk/migrating-3to4.md
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@ -49,6 +49,15 @@ application, e.g.:
G_ENABLE_DIAGNOSTIC=1 ./your-app G_ENABLE_DIAGNOSTIC=1 ./your-app
``` ```
### Do not use GTK-specific command line arguments
GTK4 does not parse command line arguments any more. If you are using
command line arguments like `--gtk-debug` you should use the `GTK_DEBUG`
environment variable instead. If you are using `--g-fatal-warnings` for
debugging purposes, you should use the `G_DEBUG` environment variable, as
specified by the
[GLib documentation](https://developer.gnome.org/glib/stable/glib-running.html).
### Do not use widget style properties ### Do not use widget style properties
Style properties do not exist in GTK 4. You should stop using them in Style properties do not exist in GTK 4. You should stop using them in