gtk:print-run-page-setup-dialog-async (parent setup settings func)

parent -- a gtk:window transient parent, or nil
setup -- an existing gtk:page-setup, or nil
settings -- a gtk:print-settings object
func -- a gtk:page-setup-done-func callback function to call when the user saves the modified page setup

Runs a page setup dialog, letting the user modify the values from setup. In contrast to the gtk:print-run-page-setup-dialog function, this function returns after showing the page setup dialog on platforms that support this, and calls func from a signal handler for the "response" signal of the dialog.