order with shift key or "normal" order

i want to know if an issued order was given by the player or Automatically ( auto cast for example).
First I thought it would be easy, it would be sufficient to determine whether the unit was selected or not.
But it was not counting orders with the shift key.
I can not make the difference !!!
Thx for your anwers

Orders ordered with shift held are not ordered instantly. They are ordered once the current order is finished/stops.

Btw, I'd just like to hijack this thread :P

Is there any way to issue shift-orders by JASS?

@Malf : yes i know but i don't want to believe it's impossible to make the difference

i just want say ACTUALLY it's impossible, maybe later we will found a great idea

And the point of this thread being?

just because i hate to see somewhone say it's impossible, no more point