Order Status Change To "printed" After Invoice/packing Slip Is Printed

Dear members,

I want to change the order status from processed to printed automatically as soon as the invoice or packing slip is printed http://prntscr.com/l3xt3s

Please devise me a solution, how I can do this? so when admin prints the invoice for any order, it automatically changes status to printed?

I suggest you to use My changes module and orders.pre.php controller to call fn_change_order_status function for the following modes:

- bulk_print

- packing_slip

- print_invoice

- print_packing_slip

can you please provide me the code for this?

As I do not know much of coding

I suggest you to use My changes module and orders.pre.php controller to call fn_change_order_status function for the following modes:

- bulk_print

- packing_slip

- print_invoice

- print_packing_slip

Sorry, advice is free, work is not

And why would this be important if it is printed or not? Either way customer can print invoice from front end at any time..