void gtk_application_add_window ( GtkApplication* application, GtkWindow* window )
Adds a window to
This call can only happen after the
application has started;
typically, you should add new application windows in response
to the emission of the
This call is equivalent to setting the
Normally, the connection between the application and the window will remain until the window is destroyed, but you can explicitly remove it with gtk_application_remove_window().
GTK+ will keep the
application running as long as it has
Available since: 3.0
The data is owned by the caller of the function.