Sets up the gtk.print_operation.PrintOperation to wait for calling of [methodGtk.PrintOperation.draw_page_finish from application.
This can be used for drawing page in another thread.
This function must be called in the callback of the signalGtk.PrintOperation::draw-page signal.
Sets up the gtk.print_operation.PrintOperation to wait for calling of [methodGtk.PrintOperation.draw_page_finish from application.
This can be used for drawing page in another thread.
This function must be called in the callback of the signalGtk.PrintOperation::draw-page signal.