Warning GtkHandleBox::child-detached has been deprecated since version 3.4 and should not be used in newly-written code. GtkHandleBox has been deprecated. This signal is emitted when the contents of the handlebox are detached from the main window.
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Warning GtkHandleBox::child-detached has been deprecated since version 3.4 and should not be used in newly-written code. GtkHandleBox has been deprecated. This signal is emitted when the contents of the handlebox are detached from the main window.