void gtk_native_dialog_set_transient_for ( GtkNativeDialog* self, GtkWindow* parent )
Dialog windows should be set transient for the main application window they were spawned from. This allows [window managers][gtk-X11-arch] to e.g. keep the dialog on top of the main window, or center the dialog over the main window.
parent unsets the current transient window.
Available since: 3.20
Parent window, or
The argument can be
The data is owned by the caller of the method.