Start a print operation using current print settings and page setup.
Start a print operation using current print settings and page setup without showing the print dialog. If either print settings or page setup are not set with webkit_print_operation_set_print_settings() and webkit_print_operation_set_page_setup(), the default options will be used and the print job will be sent to the default printer. The #WebKitPrintOperation::finished signal is emitted when the printing operation finishes. If an error occurs while printing the signal #WebKitPrintOperation::failed is emitted before #WebKitPrintOperation::finished.
If the app is running in a sandbox, this function only works if printing to a file that is in a location accessible to the sandbox, usually acquired through the File Chooser portal. This function will not work for physical printers when running in a sandbox.