Notebook.addOnCreateWindow

The ::create-window signal is emitted when a detachable tab is dropped on the root window.

A handler for this signal can create a window containing a notebook where the tab will be attached. It is also responsible for moving/resizing the window and adding the necessary properties to the notebook (e.g. the #GtkNotebook:group-name ).

class Notebook
addOnCreateWindow

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Since

2.12