property_expression = Gtk.PropertyExpression.new(GObject.TYPE_STRING, None, “string”)
return: TypeError: constructor returned NULL
The first argument needs to be a GObject type. G_TYPE_STRING
is just the C string type (char *
). I think you were looking for Gtk.StringObject
.
Unfortunately, this still won’t work unless you have the very latest PyGObject with Fundamental type support (!250) · Merge requests · GNOME / pygobject · GitLab.
For alternatives in the meantime, see:
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