Holding a button down...

is it possible for a trigger to recognize that a button is being held down??? Like, if I were to hold the spacebar down for a few seconds, some event would happen.

Also, is there a trigger that will recognize when you click the mouse(Not on a unit, but anywhere)?????

Thanks in advance

-isyiwang

That's a key, not a button.

And I doubt detecting key-strokes is possible. It might be possible to check the effect of the key-stroke having happend.
Ex: you can detect wether the abort cinematic key has been hit, which equals ESC. It might be possible to do the same with custom text.